./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec27_product19.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 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:26:11,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:26:11,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:26:11,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:26:11,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:26:11,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:26:11,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:26:11,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:26:11,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:26:11,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:26:11,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:26:11,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:26:11,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:26:11,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:26:11,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:26:11,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:26:11,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:26:11,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:26:11,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:26:11,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:26:11,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:26:11,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:26:11,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:26:11,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:26:11,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:26:11,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:26:11,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:26:11,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:26:11,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:26:11,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:26:11,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:26:11,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:26:11,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:26:11,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:26:11,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:26:11,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:26:11,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:26:11,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:26:11,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:26:11,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:26:11,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:26:11,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:26:11,662 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:26:11,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:26:11,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:26:11,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:26:11,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:26:11,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:26:11,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:26:11,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:26:11,664 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:26:11,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:26:11,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:26:11,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:26:11,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:26:11,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:26:11,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:26:11,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:26:11,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:26:11,667 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:26:11,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:26:11,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:26:11,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:26:11,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:26:11,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:26:11,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:26:11,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:26:11,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:26:11,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:26:11,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:26:11,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:26:11,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:26:11,670 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:26:11,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:26:11,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:26:11,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:26:11,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 [2021-12-22 11:26:11,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:26:11,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:26:11,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:26:11,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:26:11,871 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:26:11,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2021-12-22 11:26:11,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951764b0a/c9e6184349c944cf88b96ad7c0627610/FLAGda9b4c68d [2021-12-22 11:26:12,569 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:26:12,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2021-12-22 11:26:12,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951764b0a/c9e6184349c944cf88b96ad7c0627610/FLAGda9b4c68d [2021-12-22 11:26:12,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951764b0a/c9e6184349c944cf88b96ad7c0627610 [2021-12-22 11:26:12,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:26:12,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:26:12,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:26:12,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:26:12,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:26:12,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:26:12" (1/1) ... [2021-12-22 11:26:12,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbc0ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:12, skipping insertion in model container [2021-12-22 11:26:12,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:26:12" (1/1) ... [2021-12-22 11:26:12,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:26:12,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:26:13,351 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2021-12-22 11:26:13,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:26:13,581 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:26:13,618 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2021-12-22 11:26:13,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:26:13,682 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:26:13,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13 WrapperNode [2021-12-22 11:26:13,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:26:13,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:26:13,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:26:13,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:26:13,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,774 INFO L137 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 949 [2021-12-22 11:26:13,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:26:13,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:26:13,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:26:13,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:26:13,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:26:13,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:26:13,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:26:13,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:26:13,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (1/1) ... [2021-12-22 11:26:13,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:26:13,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:13,913 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) [2021-12-22 11:26:13,944 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 [2021-12-22 11:26:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-22 11:26:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-22 11:26:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-22 11:26:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-22 11:26:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-22 11:26:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-22 11:26:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-22 11:26:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-22 11:26:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-22 11:26:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-22 11:26:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-22 11:26:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-22 11:26:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-22 11:26:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-22 11:26:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-22 11:26:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-22 11:26:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-22 11:26:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:26:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-22 11:26:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-22 11:26:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-22 11:26:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-22 11:26:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-22 11:26:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-22 11:26:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-22 11:26:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-22 11:26:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-22 11:26:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-22 11:26:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-22 11:26:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-22 11:26:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-22 11:26:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-22 11:26:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-22 11:26:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-22 11:26:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-22 11:26:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-22 11:26:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:26:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-22 11:26:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-22 11:26:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:26:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:26:14,151 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:26:14,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:26:14,693 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:26:14,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:26:14,704 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:26:14,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:26:14 BoogieIcfgContainer [2021-12-22 11:26:14,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:26:14,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:26:14,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:26:14,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:26:14,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:26:12" (1/3) ... [2021-12-22 11:26:14,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25af389a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:26:14, skipping insertion in model container [2021-12-22 11:26:14,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:13" (2/3) ... [2021-12-22 11:26:14,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25af389a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:26:14, skipping insertion in model container [2021-12-22 11:26:14,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:26:14" (3/3) ... [2021-12-22 11:26:14,714 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2021-12-22 11:26:14,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:26:14,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:26:14,750 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:26:14,754 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 [2021-12-22 11:26:14,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:26:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 250 states have internal predecessors, (378), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-22 11:26:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 11:26:14,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:14,792 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:14,793 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:14,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1318613566, now seen corresponding path program 1 times [2021-12-22 11:26:14,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:14,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499201078] [2021-12-22 11:26:14,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:14,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:26:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:26:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:26:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 11:26:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 11:26:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:26:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:26:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:26:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:26:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:26:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:26:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 11:26:15,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:15,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499201078] [2021-12-22 11:26:15,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499201078] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:15,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110195967] [2021-12-22 11:26:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:15,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:15,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:15,216 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) [2021-12-22 11:26:15,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 11:26:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:15,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 11:26:15,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-22 11:26:15,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:15,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110195967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:15,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:15,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-22 11:26:15,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779597983] [2021-12-22 11:26:15,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:15,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 11:26:15,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 11:26:15,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:15,669 INFO L87 Difference]: Start difference. First operand has 314 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 250 states have internal predecessors, (378), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 11:26:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:15,699 INFO L93 Difference]: Finished difference Result 474 states and 694 transitions. [2021-12-22 11:26:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 11:26:15,701 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2021-12-22 11:26:15,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:15,710 INFO L225 Difference]: With dead ends: 474 [2021-12-22 11:26:15,710 INFO L226 Difference]: Without dead ends: 307 [2021-12-22 11:26:15,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:15,715 INFO L933 BasicCegarLoop]: 466 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, 466 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 [2021-12-22 11:26:15,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-12-22 11:26:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-12-22 11:26:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 242 states have (on average 1.5165289256198347) internal successors, (367), 243 states have internal predecessors, (367), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-22 11:26:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 458 transitions. [2021-12-22 11:26:15,773 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 458 transitions. Word has length 108 [2021-12-22 11:26:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:15,774 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 458 transitions. [2021-12-22 11:26:15,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 11:26:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 458 transitions. [2021-12-22 11:26:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-22 11:26:15,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:15,778 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:15,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 11:26:15,985 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 [2021-12-22 11:26:15,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:15,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash -406077674, now seen corresponding path program 1 times [2021-12-22 11:26:15,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:15,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74815184] [2021-12-22 11:26:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:15,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:26:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:26:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:26:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 11:26:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 11:26:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:26:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:26:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:26:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:26:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:26:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:26:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 11:26:16,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:16,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74815184] [2021-12-22 11:26:16,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74815184] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:16,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195337680] [2021-12-22 11:26:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:16,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:16,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:16,132 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) [2021-12-22 11:26:16,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 11:26:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 11:26:16,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-22 11:26:16,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:16,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195337680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:16,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:16,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:26:16,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578185759] [2021-12-22 11:26:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:16,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:26:16,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:26:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:26:16,488 INFO L87 Difference]: Start difference. First operand 307 states and 458 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 11:26:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:16,509 INFO L93 Difference]: Finished difference Result 464 states and 675 transitions. [2021-12-22 11:26:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:26:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2021-12-22 11:26:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:16,512 INFO L225 Difference]: With dead ends: 464 [2021-12-22 11:26:16,512 INFO L226 Difference]: Without dead ends: 310 [2021-12-22 11:26:16,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:26:16,514 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 910 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 [2021-12-22 11:26:16,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 910 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-12-22 11:26:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2021-12-22 11:26:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 244 states have (on average 1.5122950819672132) internal successors, (369), 245 states have internal predecessors, (369), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-22 11:26:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 460 transitions. [2021-12-22 11:26:16,529 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 460 transitions. Word has length 109 [2021-12-22 11:26:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:16,529 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 460 transitions. [2021-12-22 11:26:16,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 11:26:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 460 transitions. [2021-12-22 11:26:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-22 11:26:16,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:16,531 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:16,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 11:26:16,736 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 [2021-12-22 11:26:16,737 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1521216077, now seen corresponding path program 1 times [2021-12-22 11:26:16,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:16,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126037015] [2021-12-22 11:26:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:16,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:26:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:26:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:26:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 11:26:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 11:26:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:26:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:26:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:26:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:26:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:26:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:26:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:26:16,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:16,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126037015] [2021-12-22 11:26:16,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126037015] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641202821] [2021-12-22 11:26:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:16,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:16,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:16,956 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) [2021-12-22 11:26:16,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 11:26:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:26:17,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-22 11:26:17,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:17,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641202821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:17,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:17,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:26:17,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169193701] [2021-12-22 11:26:17,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:17,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:26:17,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:26:17,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:26:17,398 INFO L87 Difference]: Start difference. First operand 309 states and 460 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-12-22 11:26:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:17,434 INFO L93 Difference]: Finished difference Result 648 states and 979 transitions. [2021-12-22 11:26:17,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:26:17,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 [2021-12-22 11:26:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:17,442 INFO L225 Difference]: With dead ends: 648 [2021-12-22 11:26:17,443 INFO L226 Difference]: Without dead ends: 366 [2021-12-22 11:26:17,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:26:17,446 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 107 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 885 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 [2021-12-22 11:26:17,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 885 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-12-22 11:26:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2021-12-22 11:26:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 282 states have (on average 1.5283687943262412) internal successors, (431), 283 states have internal predecessors, (431), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-12-22 11:26:17,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 544 transitions. [2021-12-22 11:26:17,511 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 544 transitions. Word has length 115 [2021-12-22 11:26:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:17,512 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 544 transitions. [2021-12-22 11:26:17,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-12-22 11:26:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 544 transitions. [2021-12-22 11:26:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-22 11:26:17,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:17,518 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:17,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 11:26:17,751 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 [2021-12-22 11:26:17,751 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1805215575, now seen corresponding path program 1 times [2021-12-22 11:26:17,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:17,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905576685] [2021-12-22 11:26:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:17,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:26:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:26:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:26:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 11:26:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 11:26:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:26:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:26:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:26:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:26:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:26:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:26:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:26:17,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:17,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905576685] [2021-12-22 11:26:17,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905576685] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:17,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645276644] [2021-12-22 11:26:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:17,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:17,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:17,861 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) [2021-12-22 11:26:17,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 11:26:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 11:26:18,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 11:26:18,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:18,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645276644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:18,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:18,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-22 11:26:18,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287101139] [2021-12-22 11:26:18,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:18,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:26:18,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:26:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:26:18,237 INFO L87 Difference]: Start difference. First operand 358 states and 544 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-12-22 11:26:18,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:18,288 INFO L93 Difference]: Finished difference Result 707 states and 1078 transitions. [2021-12-22 11:26:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:26:18,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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 116 [2021-12-22 11:26:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:18,306 INFO L225 Difference]: With dead ends: 707 [2021-12-22 11:26:18,306 INFO L226 Difference]: Without dead ends: 360 [2021-12-22 11:26:18,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:26:18,308 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 125 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1652 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 [2021-12-22 11:26:18,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1652 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-22 11:26:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-12-22 11:26:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 283 states have (on average 1.5265017667844523) internal successors, (432), 285 states have internal predecessors, (432), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2021-12-22 11:26:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 547 transitions. [2021-12-22 11:26:18,346 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 547 transitions. Word has length 116 [2021-12-22 11:26:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:18,347 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 547 transitions. [2021-12-22 11:26:18,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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) [2021-12-22 11:26:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 547 transitions. [2021-12-22 11:26:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-22 11:26:18,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:18,349 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:18,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-22 11:26:18,565 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 [2021-12-22 11:26:18,565 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:18,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1609367707, now seen corresponding path program 1 times [2021-12-22 11:26:18,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:18,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13964424] [2021-12-22 11:26:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:18,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 11:26:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 11:26:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 11:26:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:26:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:26:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:26:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:26:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:26:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:26:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:26:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 11:26:18,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:18,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13964424] [2021-12-22 11:26:18,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13964424] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:18,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033538009] [2021-12-22 11:26:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:18,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:18,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:18,751 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) [2021-12-22 11:26:18,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 11:26:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:18,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 11:26:18,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 11:26:19,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:19,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033538009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:19,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:19,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-22 11:26:19,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108980749] [2021-12-22 11:26:19,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:19,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:26:19,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:26:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:26:19,138 INFO L87 Difference]: Start difference. First operand 360 states and 547 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-22 11:26:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:19,187 INFO L93 Difference]: Finished difference Result 709 states and 1083 transitions. [2021-12-22 11:26:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:26:19,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 117 [2021-12-22 11:26:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:19,189 INFO L225 Difference]: With dead ends: 709 [2021-12-22 11:26:19,189 INFO L226 Difference]: Without dead ends: 362 [2021-12-22 11:26:19,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-22 11:26:19,191 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 124 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1641 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 [2021-12-22 11:26:19,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1641 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-22 11:26:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-12-22 11:26:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 287 states have internal predecessors, (433), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-22 11:26:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 553 transitions. [2021-12-22 11:26:19,205 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 553 transitions. Word has length 117 [2021-12-22 11:26:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:19,205 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 553 transitions. [2021-12-22 11:26:19,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-22 11:26:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 553 transitions. [2021-12-22 11:26:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 11:26:19,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:19,207 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:19,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 11:26:19,425 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 [2021-12-22 11:26:19,425 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:19,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:19,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2099317041, now seen corresponding path program 1 times [2021-12-22 11:26:19,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:19,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183113027] [2021-12-22 11:26:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:19,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 11:26:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 11:26:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:26:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:26:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:26:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:26:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:26:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:26:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:26:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:26:19,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:19,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183113027] [2021-12-22 11:26:19,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183113027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:19,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:19,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:26:19,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136334716] [2021-12-22 11:26:19,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:19,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:26:19,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:19,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:26:19,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:19,519 INFO L87 Difference]: Start difference. First operand 362 states and 553 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-22 11:26:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:21,236 INFO L93 Difference]: Finished difference Result 851 states and 1298 transitions. [2021-12-22 11:26:21,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:26:21,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2021-12-22 11:26:21,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:21,250 INFO L225 Difference]: With dead ends: 851 [2021-12-22 11:26:21,250 INFO L226 Difference]: Without dead ends: 512 [2021-12-22 11:26:21,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:26:21,252 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1103 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:21,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 1583 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 11:26:21,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-22 11:26:21,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 362. [2021-12-22 11:26:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 287 states have internal predecessors, (433), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2021-12-22 11:26:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 552 transitions. [2021-12-22 11:26:21,295 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 552 transitions. Word has length 118 [2021-12-22 11:26:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:21,295 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 552 transitions. [2021-12-22 11:26:21,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-22 11:26:21,296 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 552 transitions. [2021-12-22 11:26:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-22 11:26:21,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:21,297 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:21,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 11:26:21,297 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:21,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2110321279, now seen corresponding path program 2 times [2021-12-22 11:26:21,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:21,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821099245] [2021-12-22 11:26:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:21,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 11:26:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 11:26:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:26:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:26:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:26:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:26:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:26:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:26:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:26:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:26:21,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:21,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821099245] [2021-12-22 11:26:21,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821099245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:21,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:21,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:26:21,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336199655] [2021-12-22 11:26:21,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:21,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:26:21,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:26:21,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:21,460 INFO L87 Difference]: Start difference. First operand 362 states and 552 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) [2021-12-22 11:26:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:22,945 INFO L93 Difference]: Finished difference Result 853 states and 1301 transitions. [2021-12-22 11:26:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:26:22,946 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 119 [2021-12-22 11:26:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:22,948 INFO L225 Difference]: With dead ends: 853 [2021-12-22 11:26:22,948 INFO L226 Difference]: Without dead ends: 514 [2021-12-22 11:26:22,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:26:22,950 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1099 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:22,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 1598 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 11:26:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-22 11:26:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 364. [2021-12-22 11:26:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 289 states have internal predecessors, (434), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2021-12-22 11:26:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 555 transitions. [2021-12-22 11:26:22,970 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 555 transitions. Word has length 119 [2021-12-22 11:26:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:22,970 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 555 transitions. [2021-12-22 11:26:22,970 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) [2021-12-22 11:26:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 555 transitions. [2021-12-22 11:26:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-22 11:26:22,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:22,972 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:22,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 11:26:22,972 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:22,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:22,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1209746602, now seen corresponding path program 1 times [2021-12-22 11:26:22,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:22,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561305811] [2021-12-22 11:26:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:22,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 11:26:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:26:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:26:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:26:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:26:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:26:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 11:26:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 11:26:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 11:26:23,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:23,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561305811] [2021-12-22 11:26:23,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561305811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:23,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:23,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:26:23,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236909171] [2021-12-22 11:26:23,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:23,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:26:23,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:23,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:26:23,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:26:23,105 INFO L87 Difference]: Start difference. First operand 364 states and 555 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-22 11:26:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:24,629 INFO L93 Difference]: Finished difference Result 851 states and 1296 transitions. [2021-12-22 11:26:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:26:24,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 120 [2021-12-22 11:26:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:24,632 INFO L225 Difference]: With dead ends: 851 [2021-12-22 11:26:24,632 INFO L226 Difference]: Without dead ends: 514 [2021-12-22 11:26:24,633 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 [2021-12-22 11:26:24,634 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 1207 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 3031 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 3031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:24,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 2092 Invalid, 3469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 3031 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 11:26:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-22 11:26:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 364. [2021-12-22 11:26:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 289 states have internal predecessors, (434), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-22 11:26:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 554 transitions. [2021-12-22 11:26:24,649 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 554 transitions. Word has length 120 [2021-12-22 11:26:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:24,649 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 554 transitions. [2021-12-22 11:26:24,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-22 11:26:24,650 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 554 transitions. [2021-12-22 11:26:24,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-22 11:26:24,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:24,651 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:24,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 11:26:24,652 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:24,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:24,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2053654144, now seen corresponding path program 2 times [2021-12-22 11:26:24,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:24,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288015929] [2021-12-22 11:26:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:24,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 11:26:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 11:26:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:26:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:26:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:26:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:26:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:26:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:26:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 11:26:24,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:24,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288015929] [2021-12-22 11:26:24,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288015929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:24,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:24,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:26:24,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070509992] [2021-12-22 11:26:24,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:24,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:26:24,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:26:24,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:26:24,748 INFO L87 Difference]: Start difference. First operand 364 states and 554 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) [2021-12-22 11:26:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:26,262 INFO L93 Difference]: Finished difference Result 853 states and 1302 transitions. [2021-12-22 11:26:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:26:26,262 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 121 [2021-12-22 11:26:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:26,265 INFO L225 Difference]: With dead ends: 853 [2021-12-22 11:26:26,265 INFO L226 Difference]: Without dead ends: 516 [2021-12-22 11:26:26,266 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 [2021-12-22 11:26:26,266 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 1211 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 3004 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:26,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1211 Valid, 2044 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3004 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 11:26:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-12-22 11:26:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 366. [2021-12-22 11:26:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 286 states have (on average 1.520979020979021) internal successors, (435), 291 states have internal predecessors, (435), 57 states have call successors, (57), 18 states have call predecessors, (57), 22 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2021-12-22 11:26:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 560 transitions. [2021-12-22 11:26:26,282 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 560 transitions. Word has length 121 [2021-12-22 11:26:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:26,283 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 560 transitions. [2021-12-22 11:26:26,283 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) [2021-12-22 11:26:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 560 transitions. [2021-12-22 11:26:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-22 11:26:26,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:26,284 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:26,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 11:26:26,285 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:26,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:26,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1957721989, now seen corresponding path program 1 times [2021-12-22 11:26:26,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:26,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438405979] [2021-12-22 11:26:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:26,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:26:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 11:26:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:26:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:26:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:26:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:26:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:26:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:26:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:26,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438405979] [2021-12-22 11:26:26,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438405979] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121116933] [2021-12-22 11:26:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:26,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:26,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:26,379 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) [2021-12-22 11:26:26,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 11:26:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:26,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:26:26,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:26,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 11:26:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:26,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121116933] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 11:26:26,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 11:26:26,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-22 11:26:26,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310390594] [2021-12-22 11:26:26,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 11:26:26,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 11:26:26,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 11:26:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-22 11:26:26,893 INFO L87 Difference]: Start difference. First operand 366 states and 560 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-22 11:26:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:28,275 INFO L93 Difference]: Finished difference Result 1022 states and 1630 transitions. [2021-12-22 11:26:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 11:26:28,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 122 [2021-12-22 11:26:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:28,281 INFO L225 Difference]: With dead ends: 1022 [2021-12-22 11:26:28,281 INFO L226 Difference]: Without dead ends: 868 [2021-12-22 11:26:28,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:26:28,283 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1404 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:28,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 2067 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 11:26:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-12-22 11:26:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 694. [2021-12-22 11:26:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.5872727272727272) internal successors, (873), 555 states have internal predecessors, (873), 121 states have call successors, (121), 18 states have call predecessors, (121), 22 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2021-12-22 11:26:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1136 transitions. [2021-12-22 11:26:28,334 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1136 transitions. Word has length 122 [2021-12-22 11:26:28,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:28,335 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 1136 transitions. [2021-12-22 11:26:28,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-22 11:26:28,335 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1136 transitions. [2021-12-22 11:26:28,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-22 11:26:28,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:28,338 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:28,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 11:26:28,556 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 [2021-12-22 11:26:28,557 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash -221417816, now seen corresponding path program 1 times [2021-12-22 11:26:28,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:28,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977400422] [2021-12-22 11:26:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:28,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:26:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:26:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:26:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:26:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:26:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:26:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:26:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:26:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:28,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:28,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977400422] [2021-12-22 11:26:28,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977400422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:28,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:28,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:28,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302107730] [2021-12-22 11:26:28,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:28,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:28,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:28,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:28,635 INFO L87 Difference]: Start difference. First operand 694 states and 1136 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 11:26:29,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:29,565 INFO L93 Difference]: Finished difference Result 1803 states and 3001 transitions. [2021-12-22 11:26:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:29,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2021-12-22 11:26:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:29,585 INFO L225 Difference]: With dead ends: 1803 [2021-12-22 11:26:29,585 INFO L226 Difference]: Without dead ends: 1177 [2021-12-22 11:26:29,588 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 [2021-12-22 11:26:29,589 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1098 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:29,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 1347 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:26:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-12-22 11:26:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1019. [2021-12-22 11:26:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 811 states have (on average 1.6004932182490752) internal successors, (1298), 816 states have internal predecessors, (1298), 185 states have call successors, (185), 18 states have call predecessors, (185), 22 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2021-12-22 11:26:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1699 transitions. [2021-12-22 11:26:29,687 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1699 transitions. Word has length 128 [2021-12-22 11:26:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:29,688 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1699 transitions. [2021-12-22 11:26:29,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 11:26:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1699 transitions. [2021-12-22 11:26:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-22 11:26:29,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:29,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:29,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 11:26:29,693 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash -928584161, now seen corresponding path program 1 times [2021-12-22 11:26:29,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:29,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62995521] [2021-12-22 11:26:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:29,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:26:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:26:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:26:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:26:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:26:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:26:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:26:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:26:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:29,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62995521] [2021-12-22 11:26:29,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62995521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:29,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:29,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:29,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583006064] [2021-12-22 11:26:29,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:29,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:29,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:29,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:29,781 INFO L87 Difference]: Start difference. First operand 1019 states and 1699 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) [2021-12-22 11:26:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:30,759 INFO L93 Difference]: Finished difference Result 2583 states and 4350 transitions. [2021-12-22 11:26:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:30,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2021-12-22 11:26:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:30,767 INFO L225 Difference]: With dead ends: 2583 [2021-12-22 11:26:30,767 INFO L226 Difference]: Without dead ends: 1685 [2021-12-22 11:26:30,770 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 [2021-12-22 11:26:30,770 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1104 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:30,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 1298 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:26:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-12-22 11:26:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1527. [2021-12-22 11:26:30,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1224 states have (on average 1.6086601307189543) internal successors, (1969), 1229 states have internal predecessors, (1969), 280 states have call successors, (280), 18 states have call predecessors, (280), 22 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2021-12-22 11:26:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2560 transitions. [2021-12-22 11:26:30,835 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2560 transitions. Word has length 129 [2021-12-22 11:26:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:30,835 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 2560 transitions. [2021-12-22 11:26:30,835 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) [2021-12-22 11:26:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2560 transitions. [2021-12-22 11:26:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 11:26:30,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:30,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:30,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 11:26:30,845 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1352544666, now seen corresponding path program 1 times [2021-12-22 11:26:30,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:30,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409454148] [2021-12-22 11:26:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:30,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:26:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:26:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:26:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:26:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:26:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:26:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:26:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:26:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:30,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:30,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409454148] [2021-12-22 11:26:30,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409454148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:30,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:30,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:30,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758558836] [2021-12-22 11:26:30,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:30,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:30,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:30,989 INFO L87 Difference]: Start difference. First operand 1527 states and 2560 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) [2021-12-22 11:26:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:32,074 INFO L93 Difference]: Finished difference Result 3735 states and 6359 transitions. [2021-12-22 11:26:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:32,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-22 11:26:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:32,084 INFO L225 Difference]: With dead ends: 3735 [2021-12-22 11:26:32,084 INFO L226 Difference]: Without dead ends: 2454 [2021-12-22 11:26:32,087 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 [2021-12-22 11:26:32,087 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 1085 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:32,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1326 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:26:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2021-12-22 11:26:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2296. [2021-12-22 11:26:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 1870 states have (on average 1.6149732620320856) internal successors, (3020), 1875 states have internal predecessors, (3020), 403 states have call successors, (403), 18 states have call predecessors, (403), 22 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2021-12-22 11:26:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3873 transitions. [2021-12-22 11:26:32,168 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3873 transitions. Word has length 130 [2021-12-22 11:26:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:32,169 INFO L470 AbstractCegarLoop]: Abstraction has 2296 states and 3873 transitions. [2021-12-22 11:26:32,169 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) [2021-12-22 11:26:32,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3873 transitions. [2021-12-22 11:26:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-22 11:26:32,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:32,181 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:32,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 11:26:32,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:32,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:32,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1387209282, now seen corresponding path program 1 times [2021-12-22 11:26:32,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:32,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621224764] [2021-12-22 11:26:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:32,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:26:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:26:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:26:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:26:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:26:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:26:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:26:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:26:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:32,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:32,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621224764] [2021-12-22 11:26:32,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621224764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:32,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:32,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:32,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298447247] [2021-12-22 11:26:32,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:32,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:32,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:32,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:32,273 INFO L87 Difference]: Start difference. First operand 2296 states and 3873 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) [2021-12-22 11:26:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:33,384 INFO L93 Difference]: Finished difference Result 5529 states and 9493 transitions. [2021-12-22 11:26:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:33,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-22 11:26:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:33,399 INFO L225 Difference]: With dead ends: 5529 [2021-12-22 11:26:33,399 INFO L226 Difference]: Without dead ends: 3683 [2021-12-22 11:26:33,405 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 [2021-12-22 11:26:33,406 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1094 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:33,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 1307 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:26:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2021-12-22 11:26:33,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3525. [2021-12-22 11:26:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 2920 states have (on average 1.6188356164383562) internal successors, (4727), 2925 states have internal predecessors, (4727), 582 states have call successors, (582), 18 states have call predecessors, (582), 22 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2021-12-22 11:26:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5964 transitions. [2021-12-22 11:26:33,648 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5964 transitions. Word has length 131 [2021-12-22 11:26:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:33,650 INFO L470 AbstractCegarLoop]: Abstraction has 3525 states and 5964 transitions. [2021-12-22 11:26:33,650 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) [2021-12-22 11:26:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5964 transitions. [2021-12-22 11:26:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-22 11:26:33,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:33,660 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:33,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 11:26:33,661 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:33,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash 913454026, now seen corresponding path program 1 times [2021-12-22 11:26:33,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:33,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896517906] [2021-12-22 11:26:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:33,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 11:26:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:26:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:26:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:26:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:26:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:26:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 11:26:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:26:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:33,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:33,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896517906] [2021-12-22 11:26:33,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896517906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:33,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:33,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:33,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211156426] [2021-12-22 11:26:33,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:33,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:33,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:33,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:33,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:33,744 INFO L87 Difference]: Start difference. First operand 3525 states and 5964 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) [2021-12-22 11:26:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:34,874 INFO L93 Difference]: Finished difference Result 8477 states and 14640 transitions. [2021-12-22 11:26:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-22 11:26:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:34,912 INFO L225 Difference]: With dead ends: 8477 [2021-12-22 11:26:34,913 INFO L226 Difference]: Without dead ends: 5714 [2021-12-22 11:26:34,921 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 [2021-12-22 11:26:34,922 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1083 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:34,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 1349 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:26:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5714 states. [2021-12-22 11:26:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5556. [2021-12-22 11:26:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 4575 states have (on average 1.6128961748633879) internal successors, (7379), 4580 states have internal predecessors, (7379), 958 states have call successors, (958), 18 states have call predecessors, (958), 22 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2021-12-22 11:26:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9412 transitions. [2021-12-22 11:26:35,452 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9412 transitions. Word has length 132 [2021-12-22 11:26:35,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:35,453 INFO L470 AbstractCegarLoop]: Abstraction has 5556 states and 9412 transitions. [2021-12-22 11:26:35,454 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) [2021-12-22 11:26:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9412 transitions. [2021-12-22 11:26:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 11:26:35,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:35,484 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:35,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 11:26:35,484 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2099398746, now seen corresponding path program 1 times [2021-12-22 11:26:35,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:35,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887986957] [2021-12-22 11:26:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:35,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:26:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:26:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:26:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:26:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:26:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 11:26:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:26:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 11:26:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:35,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:35,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887986957] [2021-12-22 11:26:35,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887986957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:35,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:35,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:35,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398047926] [2021-12-22 11:26:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:35,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:35,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:35,639 INFO L87 Difference]: Start difference. First operand 5556 states and 9412 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) [2021-12-22 11:26:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:37,119 INFO L93 Difference]: Finished difference Result 13814 states and 23861 transitions. [2021-12-22 11:26:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-22 11:26:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:37,155 INFO L225 Difference]: With dead ends: 13814 [2021-12-22 11:26:37,155 INFO L226 Difference]: Without dead ends: 9397 [2021-12-22 11:26:37,170 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 [2021-12-22 11:26:37,171 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 1085 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:37,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1309 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:26:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2021-12-22 11:26:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 9239. [2021-12-22 11:26:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9239 states, 7652 states have (on average 1.6106900156821746) internal successors, (12325), 7657 states have internal predecessors, (12325), 1564 states have call successors, (1564), 18 states have call predecessors, (1564), 22 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2021-12-22 11:26:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 15648 transitions. [2021-12-22 11:26:37,623 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 15648 transitions. Word has length 133 [2021-12-22 11:26:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:37,623 INFO L470 AbstractCegarLoop]: Abstraction has 9239 states and 15648 transitions. [2021-12-22 11:26:37,624 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) [2021-12-22 11:26:37,624 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 15648 transitions. [2021-12-22 11:26:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 11:26:37,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:37,645 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:37,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 11:26:37,646 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1620420932, now seen corresponding path program 1 times [2021-12-22 11:26:37,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:37,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815846566] [2021-12-22 11:26:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:37,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:26:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:26:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:26:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:26:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 11:26:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:26:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:26:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-22 11:26:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:37,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:37,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815846566] [2021-12-22 11:26:37,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815846566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:37,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:37,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:37,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485020311] [2021-12-22 11:26:37,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:37,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:37,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:37,727 INFO L87 Difference]: Start difference. First operand 9239 states and 15648 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) [2021-12-22 11:26:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:39,270 INFO L93 Difference]: Finished difference Result 23998 states and 41407 transitions. [2021-12-22 11:26:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-22 11:26:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:39,312 INFO L225 Difference]: With dead ends: 23998 [2021-12-22 11:26:39,312 INFO L226 Difference]: Without dead ends: 16350 [2021-12-22 11:26:39,328 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 [2021-12-22 11:26:39,329 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1088 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:39,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1341 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:26:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16350 states. [2021-12-22 11:26:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16350 to 16192. [2021-12-22 11:26:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16192 states, 13402 states have (on average 1.601775854350097) internal successors, (21467), 13407 states have internal predecessors, (21467), 2767 states have call successors, (2767), 18 states have call predecessors, (2767), 22 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2021-12-22 11:26:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16192 states to 16192 states and 27340 transitions. [2021-12-22 11:26:39,994 INFO L78 Accepts]: Start accepts. Automaton has 16192 states and 27340 transitions. Word has length 134 [2021-12-22 11:26:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:39,994 INFO L470 AbstractCegarLoop]: Abstraction has 16192 states and 27340 transitions. [2021-12-22 11:26:39,994 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) [2021-12-22 11:26:39,995 INFO L276 IsEmpty]: Start isEmpty. Operand 16192 states and 27340 transitions. [2021-12-22 11:26:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 11:26:40,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:40,024 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:40,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 11:26:40,024 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash -71748903, now seen corresponding path program 1 times [2021-12-22 11:26:40,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65689923] [2021-12-22 11:26:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:40,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:26:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:26:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:26:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:26:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:26:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:26:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:26:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 11:26:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:40,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65689923] [2021-12-22 11:26:40,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65689923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:40,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:40,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:40,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971291600] [2021-12-22 11:26:40,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:40,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:40,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:40,107 INFO L87 Difference]: Start difference. First operand 16192 states and 27340 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) [2021-12-22 11:26:41,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:41,823 INFO L93 Difference]: Finished difference Result 42964 states and 74006 transitions. [2021-12-22 11:26:41,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:41,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-22 11:26:41,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:41,919 INFO L225 Difference]: With dead ends: 42964 [2021-12-22 11:26:41,920 INFO L226 Difference]: Without dead ends: 29005 [2021-12-22 11:26:41,962 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 [2021-12-22 11:26:41,964 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1085 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:41,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 1303 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:26:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29005 states. [2021-12-22 11:26:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29005 to 28847. [2021-12-22 11:26:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28847 states, 24018 states have (on average 1.5975934715629945) internal successors, (38371), 24023 states have internal predecessors, (38371), 4806 states have call successors, (4806), 18 states have call predecessors, (4806), 22 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2021-12-22 11:26:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28847 states to 28847 states and 48596 transitions. [2021-12-22 11:26:43,190 INFO L78 Accepts]: Start accepts. Automaton has 28847 states and 48596 transitions. Word has length 135 [2021-12-22 11:26:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:43,191 INFO L470 AbstractCegarLoop]: Abstraction has 28847 states and 48596 transitions. [2021-12-22 11:26:43,191 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) [2021-12-22 11:26:43,191 INFO L276 IsEmpty]: Start isEmpty. Operand 28847 states and 48596 transitions. [2021-12-22 11:26:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-22 11:26:43,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:43,226 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:43,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 11:26:43,227 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1737476538, now seen corresponding path program 1 times [2021-12-22 11:26:43,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:43,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814921659] [2021-12-22 11:26:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:43,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:26:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:26:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:26:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:26:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:26:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:26:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:26:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:26:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:43,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:43,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814921659] [2021-12-22 11:26:43,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814921659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:43,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:43,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:43,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462119331] [2021-12-22 11:26:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:43,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:43,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:43,306 INFO L87 Difference]: Start difference. First operand 28847 states and 48596 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) [2021-12-22 11:26:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:45,791 INFO L93 Difference]: Finished difference Result 78726 states and 134765 transitions. [2021-12-22 11:26:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:45,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-12-22 11:26:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:45,966 INFO L225 Difference]: With dead ends: 78726 [2021-12-22 11:26:45,966 INFO L226 Difference]: Without dead ends: 52884 [2021-12-22 11:26:46,021 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 [2021-12-22 11:26:46,022 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1078 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:46,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 1323 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:26:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52884 states. [2021-12-22 11:26:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52884 to 52726. [2021-12-22 11:26:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52726 states, 44182 states have (on average 1.5920510615182653) internal successors, (70340), 44187 states have internal predecessors, (70340), 8521 states have call successors, (8521), 18 states have call predecessors, (8521), 22 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2021-12-22 11:26:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52726 states to 52726 states and 88527 transitions. [2021-12-22 11:26:48,691 INFO L78 Accepts]: Start accepts. Automaton has 52726 states and 88527 transitions. Word has length 136 [2021-12-22 11:26:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:48,692 INFO L470 AbstractCegarLoop]: Abstraction has 52726 states and 88527 transitions. [2021-12-22 11:26:48,692 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) [2021-12-22 11:26:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 52726 states and 88527 transitions. [2021-12-22 11:26:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-22 11:26:48,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:48,735 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:48,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 11:26:48,736 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1452520601, now seen corresponding path program 1 times [2021-12-22 11:26:48,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:48,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672411354] [2021-12-22 11:26:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:48,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:26:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:26:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:26:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:26:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:26:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:26:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:26:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 11:26:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:48,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:48,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672411354] [2021-12-22 11:26:48,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672411354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:48,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:48,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:48,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851717619] [2021-12-22 11:26:48,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:48,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:48,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:48,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:48,827 INFO L87 Difference]: Start difference. First operand 52726 states and 88527 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) [2021-12-22 11:26:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:52,728 INFO L93 Difference]: Finished difference Result 98497 states and 168952 transitions. [2021-12-22 11:26:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:52,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-12-22 11:26:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:53,191 INFO L225 Difference]: With dead ends: 98497 [2021-12-22 11:26:53,191 INFO L226 Difference]: Without dead ends: 98343 [2021-12-22 11:26:53,228 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 [2021-12-22 11:26:53,230 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1081 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:53,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 1309 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:26:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98343 states. [2021-12-22 11:26:56,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98343 to 98185. [2021-12-22 11:26:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98185 states, 82842 states have (on average 1.5850655464619396) internal successors, (131310), 82847 states have internal predecessors, (131310), 15320 states have call successors, (15320), 18 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2021-12-22 11:26:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98185 states to 98185 states and 164141 transitions. [2021-12-22 11:26:57,735 INFO L78 Accepts]: Start accepts. Automaton has 98185 states and 164141 transitions. Word has length 137 [2021-12-22 11:26:57,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:57,735 INFO L470 AbstractCegarLoop]: Abstraction has 98185 states and 164141 transitions. [2021-12-22 11:26:57,735 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) [2021-12-22 11:26:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 98185 states and 164141 transitions. [2021-12-22 11:26:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-22 11:26:57,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:57,812 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:57,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 11:26:57,827 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1217673285, now seen corresponding path program 1 times [2021-12-22 11:26:57,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:57,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123321664] [2021-12-22 11:26:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:57,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:26:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:26:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:26:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:26:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:26:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:26:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:26:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 11:26:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:26:57,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:57,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123321664] [2021-12-22 11:26:57,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123321664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:57,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:57,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:26:57,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63204001] [2021-12-22 11:26:57,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:57,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:26:57,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:57,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:26:57,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:57,960 INFO L87 Difference]: Start difference. First operand 98185 states and 164141 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 11:27:01,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:01,928 INFO L93 Difference]: Finished difference Result 98481 states and 167841 transitions. [2021-12-22 11:27:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 11:27:01,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2021-12-22 11:27:01,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:02,634 INFO L225 Difference]: With dead ends: 98481 [2021-12-22 11:27:02,634 INFO L226 Difference]: Without dead ends: 98335 [2021-12-22 11:27:02,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-12-22 11:27:02,673 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1047 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:02,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 1774 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:27:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98335 states. [2021-12-22 11:27:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98335 to 98185. [2021-12-22 11:27:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98185 states, 82842 states have (on average 1.5850534752903116) internal successors, (131309), 82847 states have internal predecessors, (131309), 15320 states have call successors, (15320), 18 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2021-12-22 11:27:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98185 states to 98185 states and 164140 transitions. [2021-12-22 11:27:07,029 INFO L78 Accepts]: Start accepts. Automaton has 98185 states and 164140 transitions. Word has length 138 [2021-12-22 11:27:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:07,029 INFO L470 AbstractCegarLoop]: Abstraction has 98185 states and 164140 transitions. [2021-12-22 11:27:07,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 11:27:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 98185 states and 164140 transitions. [2021-12-22 11:27:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 11:27:07,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:07,087 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:27:07,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 11:27:07,087 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:07,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:07,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1770088573, now seen corresponding path program 1 times [2021-12-22 11:27:07,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:07,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974496712] [2021-12-22 11:27:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:07,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:27:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:27:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:27:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:27:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:27:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:27:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:27:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 11:27:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 11:27:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:27:07,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:07,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974496712] [2021-12-22 11:27:07,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974496712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:07,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:07,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 11:27:07,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945599614] [2021-12-22 11:27:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:07,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 11:27:07,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 11:27:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:27:07,206 INFO L87 Difference]: Start difference. First operand 98185 states and 164140 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 11:27:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:12,667 INFO L93 Difference]: Finished difference Result 99021 states and 168625 transitions. [2021-12-22 11:27:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-22 11:27:12,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2021-12-22 11:27:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:13,247 INFO L225 Difference]: With dead ends: 99021 [2021-12-22 11:27:13,247 INFO L226 Difference]: Without dead ends: 98875 [2021-12-22 11:27:13,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2021-12-22 11:27:13,289 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 2109 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 2990 mSolverCounterSat, 1108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 4098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 2990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:13,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 1946 Invalid, 4098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1108 Valid, 2990 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 11:27:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98875 states.