./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_spec4_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 f3a1dbda837d8ce3c466139238aee66f09284cf7efb22d92a7aae56a5f98c665 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:27:50,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:27:50,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:27:50,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:27:50,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:27:50,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:27:50,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:27:50,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:27:50,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:27:50,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:27:50,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:27:50,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:27:50,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:27:50,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:27:50,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:27:50,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:27:50,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:27:50,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:27:50,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:27:50,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:27:50,067 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:27:50,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:27:50,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:27:50,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:27:50,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:27:50,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:27:50,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:27:50,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:27:50,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:27:50,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:27:50,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:27:50,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:27:50,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:27:50,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:27:50,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:27:50,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:27:50,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:27:50,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:27:50,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:27:50,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:27:50,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:27:50,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:27:50,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:27:50,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:27:50,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:27:50,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:27:50,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:27:50,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:27:50,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:27:50,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:27:50,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:27:50,114 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:27:50,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:27:50,115 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:27:50,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:27:50,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:27:50,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:27:50,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:27:50,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:27:50,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:27:50,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:27:50,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:27:50,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:27:50,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:27:50,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:27:50,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:27:50,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:27:50,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:27:50,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:27:50,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:27:50,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:27:50,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:27:50,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:27:50,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:27:50,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:27:50,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:27:50,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3a1dbda837d8ce3c466139238aee66f09284cf7efb22d92a7aae56a5f98c665 [2022-07-22 17:27:50,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:27:50,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:27:50,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:27:50,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:27:50,364 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:27:50,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c [2022-07-22 17:27:50,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b2f92da/72ea4292082c45bf8e983ab3d0b21af2/FLAGee850fee0 [2022-07-22 17:27:50,882 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:27:50,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c [2022-07-22 17:27:50,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b2f92da/72ea4292082c45bf8e983ab3d0b21af2/FLAGee850fee0 [2022-07-22 17:27:50,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b2f92da/72ea4292082c45bf8e983ab3d0b21af2 [2022-07-22 17:27:50,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:27:50,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:27:50,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:27:50,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:27:50,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:27:50,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:27:50" (1/1) ... [2022-07-22 17:27:50,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b99de38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:50, skipping insertion in model container [2022-07-22 17:27:50,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:27:50" (1/1) ... [2022-07-22 17:27:50,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:27:50,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:27:51,072 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_spec4_product19.cil.c[1542,1555] [2022-07-22 17:27:51,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:27:51,374 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:27:51,389 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_spec4_product19.cil.c[1542,1555] [2022-07-22 17:27:51,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:27:51,487 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:27:51,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51 WrapperNode [2022-07-22 17:27:51,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:27:51,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:27:51,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:27:51,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:27:51,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,584 INFO L137 Inliner]: procedures = 127, calls = 199, calls flagged for inlining = 59, calls inlined = 54, statements flattened = 982 [2022-07-22 17:27:51,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:27:51,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:27:51,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:27:51,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:27:51,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:27:51,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:27:51,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:27:51,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:27:51,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (1/1) ... [2022-07-22 17:27:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:27:51,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:27:51,720 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) [2022-07-22 17:27:51,747 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 [2022-07-22 17:27:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-22 17:27:51,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-22 17:27:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-22 17:27:51,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-22 17:27:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-22 17:27:51,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-22 17:27:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-22 17:27:51,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-22 17:27:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-22 17:27:51,778 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-22 17:27:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-22 17:27:51,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-22 17:27:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-22 17:27:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-22 17:27:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-22 17:27:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-22 17:27:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-22 17:27:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-22 17:27:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-22 17:27:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:27:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-22 17:27:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-22 17:27:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-22 17:27:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-22 17:27:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-22 17:27:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-22 17:27:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-22 17:27:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-22 17:27:51,780 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-22 17:27:51,780 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-22 17:27:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-22 17:27:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-22 17:27:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-22 17:27:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-22 17:27:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:27:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-22 17:27:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-22 17:27:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:27:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:27:51,952 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:27:51,953 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:27:52,482 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:27:52,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:27:52,493 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:27:52,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:27:52 BoogieIcfgContainer [2022-07-22 17:27:52,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:27:52,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:27:52,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:27:52,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:27:52,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:27:50" (1/3) ... [2022-07-22 17:27:52,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3796dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:27:52, skipping insertion in model container [2022-07-22 17:27:52,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:27:51" (2/3) ... [2022-07-22 17:27:52,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3796dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:27:52, skipping insertion in model container [2022-07-22 17:27:52,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:27:52" (3/3) ... [2022-07-22 17:27:52,502 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2022-07-22 17:27:52,511 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:27:52,511 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:27:52,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:27:52,570 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62e6575a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31392b41 [2022-07-22 17:27:52,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:27:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 245 states have (on average 1.530612244897959) internal successors, (375), 247 states have internal predecessors, (375), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-22 17:27:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 17:27:52,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:27:52,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:27:52,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:27:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:27:52,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1893716635, now seen corresponding path program 1 times [2022-07-22 17:27:52,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:27:52,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021020083] [2022-07-22 17:27:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:52,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:27:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:27:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:27:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:27:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:27:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:27:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:27:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:27:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 17:27:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:27:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:27:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:27:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:27:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 17:27:53,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:27:53,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021020083] [2022-07-22 17:27:53,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021020083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:27:53,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150023732] [2022-07-22 17:27:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:53,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:27:53,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:27:53,008 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) [2022-07-22 17:27:53,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:27:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 17:27:53,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:27:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 17:27:53,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:27:53,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150023732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:27:53,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:27:53,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-22 17:27:53,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303452551] [2022-07-22 17:27:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:27:53,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:27:53,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:27:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:27:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:27:53,314 INFO L87 Difference]: Start difference. First operand has 308 states, 245 states have (on average 1.530612244897959) internal successors, (375), 247 states have internal predecessors, (375), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:27:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:27:53,356 INFO L93 Difference]: Finished difference Result 462 states and 680 transitions. [2022-07-22 17:27:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:27:53,358 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 92 [2022-07-22 17:27:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:27:53,366 INFO L225 Difference]: With dead ends: 462 [2022-07-22 17:27:53,366 INFO L226 Difference]: Without dead ends: 301 [2022-07-22 17:27:53,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:27:53,372 INFO L413 NwaCegarLoop]: 459 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, 459 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:27:53,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:27:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-22 17:27:53,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-07-22 17:27:53,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 239 states have (on average 1.5230125523012552) internal successors, (364), 240 states have internal predecessors, (364), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-22 17:27:53,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 451 transitions. [2022-07-22 17:27:53,416 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 451 transitions. Word has length 92 [2022-07-22 17:27:53,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:27:53,417 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 451 transitions. [2022-07-22 17:27:53,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:27:53,418 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 451 transitions. [2022-07-22 17:27:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 17:27:53,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:27:53,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:27:53,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:27:53,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 17:27:53,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:27:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:27:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2053033813, now seen corresponding path program 1 times [2022-07-22 17:27:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:27:53,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308975319] [2022-07-22 17:27:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:53,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:27:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:27:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:27:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:27:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:27:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:27:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:27:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:27:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:27:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:27:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:27:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:27:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:27:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 17:27:53,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:27:53,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308975319] [2022-07-22 17:27:53,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308975319] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:27:53,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079761049] [2022-07-22 17:27:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:53,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:27:53,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:27:53,775 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) [2022-07-22 17:27:53,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:27:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:53,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:27:53,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:27:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 17:27:54,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:27:54,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079761049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:27:54,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:27:54,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:27:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845138762] [2022-07-22 17:27:54,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:27:54,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:27:54,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:27:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:27:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:27:54,026 INFO L87 Difference]: Start difference. First operand 301 states and 451 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:27:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:27:54,051 INFO L93 Difference]: Finished difference Result 452 states and 661 transitions. [2022-07-22 17:27:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:27:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 93 [2022-07-22 17:27:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:27:54,054 INFO L225 Difference]: With dead ends: 452 [2022-07-22 17:27:54,054 INFO L226 Difference]: Without dead ends: 304 [2022-07-22 17:27:54,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:27:54,056 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:27:54,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 896 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:27:54,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-22 17:27:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2022-07-22 17:27:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 241 states have (on average 1.5186721991701244) internal successors, (366), 242 states have internal predecessors, (366), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-22 17:27:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 453 transitions. [2022-07-22 17:27:54,073 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 453 transitions. Word has length 93 [2022-07-22 17:27:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:27:54,074 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 453 transitions. [2022-07-22 17:27:54,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:27:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 453 transitions. [2022-07-22 17:27:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 17:27:54,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:27:54,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:27:54,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 17:27:54,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-22 17:27:54,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:27:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:27:54,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1393574004, now seen corresponding path program 1 times [2022-07-22 17:27:54,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:27:54,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490810628] [2022-07-22 17:27:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:54,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:27:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:27:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:27:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:27:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:27:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:27:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:27:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:27:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:27:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:27:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:27:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:27:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:27:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:27:54,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:27:54,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490810628] [2022-07-22 17:27:54,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490810628] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:27:54,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952035969] [2022-07-22 17:27:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:54,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:27:54,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:27:54,464 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) [2022-07-22 17:27:54,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:27:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:54,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:27:54,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:27:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 17:27:54,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:27:54,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952035969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:27:54,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:27:54,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:27:54,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062510318] [2022-07-22 17:27:54,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:27:54,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:27:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:27:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:27:54,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:27:54,712 INFO L87 Difference]: Start difference. First operand 303 states and 453 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:27:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:27:54,757 INFO L93 Difference]: Finished difference Result 636 states and 965 transitions. [2022-07-22 17:27:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:27:54,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2022-07-22 17:27:54,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:27:54,763 INFO L225 Difference]: With dead ends: 636 [2022-07-22 17:27:54,763 INFO L226 Difference]: Without dead ends: 360 [2022-07-22 17:27:54,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:27:54,767 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 107 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:27:54,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 872 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:27:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-22 17:27:54,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 352. [2022-07-22 17:27:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 279 states have (on average 1.5340501792114696) internal successors, (428), 280 states have internal predecessors, (428), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-22 17:27:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 537 transitions. [2022-07-22 17:27:54,785 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 537 transitions. Word has length 99 [2022-07-22 17:27:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:27:54,786 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 537 transitions. [2022-07-22 17:27:54,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:27:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 537 transitions. [2022-07-22 17:27:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 17:27:54,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:27:54,789 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:27:54,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:27:55,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:27:55,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:27:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:27:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2023849858, now seen corresponding path program 1 times [2022-07-22 17:27:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:27:55,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496050700] [2022-07-22 17:27:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:27:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:27:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:27:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:27:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:27:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:27:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:27:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 17:27:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:27:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:27:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:27:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:27:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:27:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:27:55,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:27:55,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496050700] [2022-07-22 17:27:55,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496050700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:27:55,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968176280] [2022-07-22 17:27:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:55,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:27:55,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:27:55,108 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) [2022-07-22 17:27:55,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:27:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:27:55,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:27:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:27:55,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:27:55,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968176280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:27:55,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:27:55,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-22 17:27:55,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789575846] [2022-07-22 17:27:55,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:27:55,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:27:55,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:27:55,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:27:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:27:55,351 INFO L87 Difference]: Start difference. First operand 352 states and 537 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:27:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:27:55,395 INFO L93 Difference]: Finished difference Result 695 states and 1064 transitions. [2022-07-22 17:27:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:27:55,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2022-07-22 17:27:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:27:55,398 INFO L225 Difference]: With dead ends: 695 [2022-07-22 17:27:55,398 INFO L226 Difference]: Without dead ends: 354 [2022-07-22 17:27:55,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:27:55,400 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 125 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:27:55,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1623 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:27:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-07-22 17:27:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-07-22 17:27:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 280 states have (on average 1.5321428571428573) internal successors, (429), 282 states have internal predecessors, (429), 55 states have call successors, (55), 17 states have call predecessors, (55), 18 states have return successors, (56), 54 states have call predecessors, (56), 54 states have call successors, (56) [2022-07-22 17:27:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 540 transitions. [2022-07-22 17:27:55,413 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 540 transitions. Word has length 100 [2022-07-22 17:27:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:27:55,413 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 540 transitions. [2022-07-22 17:27:55,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:27:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 540 transitions. [2022-07-22 17:27:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 17:27:55,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:27:55,416 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:27:55,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 17:27:55,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:27:55,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:27:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:27:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash 373687396, now seen corresponding path program 1 times [2022-07-22 17:27:55,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:27:55,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564632737] [2022-07-22 17:27:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:55,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:27:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:27:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:27:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:27:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:27:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:27:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:27:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:27:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:27:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:27:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:27:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:27:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:27:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:27:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:27:55,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564632737] [2022-07-22 17:27:55,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564632737] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:27:55,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301476573] [2022-07-22 17:27:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:55,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:27:55,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:27:55,788 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) [2022-07-22 17:27:55,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:27:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:55,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 17:27:55,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:27:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 17:27:56,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:27:56,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301476573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:27:56,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:27:56,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 17:27:56,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744854591] [2022-07-22 17:27:56,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:27:56,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:27:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:27:56,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:27:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:27:56,054 INFO L87 Difference]: Start difference. First operand 354 states and 540 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:27:56,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:27:56,102 INFO L93 Difference]: Finished difference Result 697 states and 1069 transitions. [2022-07-22 17:27:56,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:27:56,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-07-22 17:27:56,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:27:56,105 INFO L225 Difference]: With dead ends: 697 [2022-07-22 17:27:56,105 INFO L226 Difference]: Without dead ends: 356 [2022-07-22 17:27:56,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:27:56,106 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 124 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:27:56,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1612 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:27:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-22 17:27:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2022-07-22 17:27:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 281 states have (on average 1.5302491103202847) internal successors, (430), 284 states have internal predecessors, (430), 55 states have call successors, (55), 17 states have call predecessors, (55), 19 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2022-07-22 17:27:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 546 transitions. [2022-07-22 17:27:56,119 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 546 transitions. Word has length 101 [2022-07-22 17:27:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:27:56,119 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 546 transitions. [2022-07-22 17:27:56,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:27:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 546 transitions. [2022-07-22 17:27:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 17:27:56,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:27:56,121 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:27:56,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:27:56,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:27:56,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:27:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:27:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash -847480188, now seen corresponding path program 1 times [2022-07-22 17:27:56,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:27:56,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815016871] [2022-07-22 17:27:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:56,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:27:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:27:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:27:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:27:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:27:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:27:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:27:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:27:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:27:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:27:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:27:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:27:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:27:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:27:56,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:27:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815016871] [2022-07-22 17:27:56,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815016871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:27:56,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:27:56,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:27:56,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323538341] [2022-07-22 17:27:56,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:27:56,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:27:56,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:27:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:27:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:27:56,436 INFO L87 Difference]: Start difference. First operand 356 states and 546 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:27:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:27:57,715 INFO L93 Difference]: Finished difference Result 848 states and 1303 transitions. [2022-07-22 17:27:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:27:57,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-07-22 17:27:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:27:57,719 INFO L225 Difference]: With dead ends: 848 [2022-07-22 17:27:57,719 INFO L226 Difference]: Without dead ends: 515 [2022-07-22 17:27:57,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:27:57,720 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1075 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:27:57,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1405 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:27:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-22 17:27:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2022-07-22 17:27:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 281 states have (on average 1.5302491103202847) internal successors, (430), 284 states have internal predecessors, (430), 55 states have call successors, (55), 17 states have call predecessors, (55), 19 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2022-07-22 17:27:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 545 transitions. [2022-07-22 17:27:57,740 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 545 transitions. Word has length 102 [2022-07-22 17:27:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:27:57,740 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 545 transitions. [2022-07-22 17:27:57,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:27:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 545 transitions. [2022-07-22 17:27:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 17:27:57,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:27:57,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:27:57,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:27:57,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:27:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:27:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash -839909108, now seen corresponding path program 2 times [2022-07-22 17:27:57,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:27:57,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371086781] [2022-07-22 17:27:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:57,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:27:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:27:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:27:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:27:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:27:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:27:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:27:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:27:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:27:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:27:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:27:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:27:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:27:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:27:57,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:27:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371086781] [2022-07-22 17:27:57,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371086781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:27:57,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:27:57,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:27:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331746407] [2022-07-22 17:27:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:27:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:27:57,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:27:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:27:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:27:57,818 INFO L87 Difference]: Start difference. First operand 356 states and 545 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:27:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:27:59,121 INFO L93 Difference]: Finished difference Result 850 states and 1306 transitions. [2022-07-22 17:27:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:27:59,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-07-22 17:27:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:27:59,124 INFO L225 Difference]: With dead ends: 850 [2022-07-22 17:27:59,124 INFO L226 Difference]: Without dead ends: 517 [2022-07-22 17:27:59,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:27:59,126 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1071 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:27:59,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1404 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:27:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-07-22 17:27:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 358. [2022-07-22 17:27:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 282 states have (on average 1.5283687943262412) internal successors, (431), 286 states have internal predecessors, (431), 55 states have call successors, (55), 17 states have call predecessors, (55), 20 states have return successors, (62), 54 states have call predecessors, (62), 54 states have call successors, (62) [2022-07-22 17:27:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 548 transitions. [2022-07-22 17:27:59,143 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 548 transitions. Word has length 103 [2022-07-22 17:27:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:27:59,143 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 548 transitions. [2022-07-22 17:27:59,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:27:59,144 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 548 transitions. [2022-07-22 17:27:59,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 17:27:59,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:27:59,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:27:59,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:27:59,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:27:59,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:27:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash -367838881, now seen corresponding path program 1 times [2022-07-22 17:27:59,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:27:59,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787708611] [2022-07-22 17:27:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:27:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:27:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:27:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:27:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:27:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:27:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:27:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:27:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:27:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:27:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:27:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:27:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:27:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:27:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:27:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:27:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:27:59,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787708611] [2022-07-22 17:27:59,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787708611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:27:59,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:27:59,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:27:59,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526484407] [2022-07-22 17:27:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:27:59,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:27:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:27:59,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:27:59,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:27:59,239 INFO L87 Difference]: Start difference. First operand 358 states and 548 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:28:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:01,007 INFO L93 Difference]: Finished difference Result 848 states and 1301 transitions. [2022-07-22 17:28:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:28:01,007 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 104 [2022-07-22 17:28:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:01,010 INFO L225 Difference]: With dead ends: 848 [2022-07-22 17:28:01,010 INFO L226 Difference]: Without dead ends: 517 [2022-07-22 17:28:01,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:28:01,011 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1183 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 3991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:01,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1700 Invalid, 3991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 17:28:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-07-22 17:28:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 358. [2022-07-22 17:28:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 282 states have (on average 1.5283687943262412) internal successors, (431), 286 states have internal predecessors, (431), 55 states have call successors, (55), 17 states have call predecessors, (55), 20 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2022-07-22 17:28:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 547 transitions. [2022-07-22 17:28:01,029 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 547 transitions. Word has length 104 [2022-07-22 17:28:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:01,029 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 547 transitions. [2022-07-22 17:28:01,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:28:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 547 transitions. [2022-07-22 17:28:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 17:28:01,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:01,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:01,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:28:01,031 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:01,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1001532517, now seen corresponding path program 2 times [2022-07-22 17:28:01,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:01,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346283497] [2022-07-22 17:28:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:28:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:28:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:28:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:28:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:28:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:28:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:28:01,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:01,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346283497] [2022-07-22 17:28:01,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346283497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:01,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:01,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:28:01,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937493188] [2022-07-22 17:28:01,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:01,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:28:01,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:01,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:28:01,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:28:01,150 INFO L87 Difference]: Start difference. First operand 358 states and 547 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:28:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:02,758 INFO L93 Difference]: Finished difference Result 850 states and 1307 transitions. [2022-07-22 17:28:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:28:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 105 [2022-07-22 17:28:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:02,760 INFO L225 Difference]: With dead ends: 850 [2022-07-22 17:28:02,774 INFO L226 Difference]: Without dead ends: 519 [2022-07-22 17:28:02,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:28:02,777 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1177 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:02,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1703 Invalid, 4033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3616 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:28:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-07-22 17:28:02,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 360. [2022-07-22 17:28:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 283 states have (on average 1.5265017667844523) internal successors, (432), 288 states have internal predecessors, (432), 55 states have call successors, (55), 17 states have call predecessors, (55), 21 states have return successors, (66), 54 states have call predecessors, (66), 54 states have call successors, (66) [2022-07-22 17:28:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 553 transitions. [2022-07-22 17:28:02,795 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 553 transitions. Word has length 105 [2022-07-22 17:28:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:02,796 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 553 transitions. [2022-07-22 17:28:02,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:28:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 553 transitions. [2022-07-22 17:28:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 17:28:02,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:02,798 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:02,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:28:02,799 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash 379498234, now seen corresponding path program 1 times [2022-07-22 17:28:02,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:02,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375324853] [2022-07-22 17:28:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:02,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:28:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:28:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:28:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:28:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:28:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:28:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:02,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:02,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375324853] [2022-07-22 17:28:02,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375324853] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:28:02,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010590815] [2022-07-22 17:28:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:02,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:28:02,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:28:02,914 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) [2022-07-22 17:28:02,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:28:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:03,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:28:03,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:28:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:03,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:28:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:03,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010590815] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:28:03,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:28:03,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-22 17:28:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090479497] [2022-07-22 17:28:03,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:28:03,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:28:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:28:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:28:03,209 INFO L87 Difference]: Start difference. First operand 360 states and 553 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 17:28:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:04,705 INFO L93 Difference]: Finished difference Result 1019 states and 1635 transitions. [2022-07-22 17:28:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:28:04,706 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 106 [2022-07-22 17:28:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:04,710 INFO L225 Difference]: With dead ends: 1019 [2022-07-22 17:28:04,710 INFO L226 Difference]: Without dead ends: 871 [2022-07-22 17:28:04,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:28:04,712 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1381 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:04,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 1892 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:28:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-07-22 17:28:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 688. [2022-07-22 17:28:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 547 states have (on average 1.5904936014625228) internal successors, (870), 552 states have internal predecessors, (870), 119 states have call successors, (119), 17 states have call predecessors, (119), 21 states have return successors, (140), 118 states have call predecessors, (140), 118 states have call successors, (140) [2022-07-22 17:28:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1129 transitions. [2022-07-22 17:28:04,760 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1129 transitions. Word has length 106 [2022-07-22 17:28:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:04,760 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1129 transitions. [2022-07-22 17:28:04,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 17:28:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1129 transitions. [2022-07-22 17:28:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:28:04,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:04,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:04,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:28:04,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:28:04,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:04,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:04,981 INFO L85 PathProgramCache]: Analyzing trace with hash -791182691, now seen corresponding path program 1 times [2022-07-22 17:28:04,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:04,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472780612] [2022-07-22 17:28:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:04,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:28:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:28:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:28:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:28:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:28:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:28:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:05,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:05,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472780612] [2022-07-22 17:28:05,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472780612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:05,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:05,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113263341] [2022-07-22 17:28:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:05,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:05,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:05,056 INFO L87 Difference]: Start difference. First operand 688 states and 1129 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:05,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:05,981 INFO L93 Difference]: Finished difference Result 1800 states and 3006 transitions. [2022-07-22 17:28:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:05,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-22 17:28:05,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:05,987 INFO L225 Difference]: With dead ends: 1800 [2022-07-22 17:28:05,987 INFO L226 Difference]: Without dead ends: 1180 [2022-07-22 17:28:05,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:05,990 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 1067 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:05,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1293 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:28:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-07-22 17:28:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1013. [2022-07-22 17:28:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 808 states have (on average 1.6027227722772277) internal successors, (1295), 813 states have internal predecessors, (1295), 183 states have call successors, (183), 17 states have call predecessors, (183), 21 states have return successors, (214), 182 states have call predecessors, (214), 182 states have call successors, (214) [2022-07-22 17:28:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1692 transitions. [2022-07-22 17:28:06,034 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1692 transitions. Word has length 112 [2022-07-22 17:28:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:06,035 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1692 transitions. [2022-07-22 17:28:06,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1692 transitions. [2022-07-22 17:28:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:28:06,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:06,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:06,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:28:06,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:06,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:06,039 INFO L85 PathProgramCache]: Analyzing trace with hash -478968496, now seen corresponding path program 1 times [2022-07-22 17:28:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:06,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055230960] [2022-07-22 17:28:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:28:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:28:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:28:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:28:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:28:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:28:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:06,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:06,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055230960] [2022-07-22 17:28:06,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055230960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:06,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:06,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:06,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415616185] [2022-07-22 17:28:06,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:06,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:06,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:06,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:06,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:06,102 INFO L87 Difference]: Start difference. First operand 1013 states and 1692 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:07,050 INFO L93 Difference]: Finished difference Result 2580 states and 4355 transitions. [2022-07-22 17:28:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:07,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-22 17:28:07,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:07,062 INFO L225 Difference]: With dead ends: 2580 [2022-07-22 17:28:07,062 INFO L226 Difference]: Without dead ends: 1688 [2022-07-22 17:28:07,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:07,067 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1064 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:07,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1252 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:28:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2022-07-22 17:28:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1521. [2022-07-22 17:28:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1221 states have (on average 1.6101556101556103) internal successors, (1966), 1226 states have internal predecessors, (1966), 278 states have call successors, (278), 17 states have call predecessors, (278), 21 states have return successors, (309), 277 states have call predecessors, (309), 277 states have call successors, (309) [2022-07-22 17:28:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2553 transitions. [2022-07-22 17:28:07,158 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2553 transitions. Word has length 113 [2022-07-22 17:28:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:07,159 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2553 transitions. [2022-07-22 17:28:07,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2553 transitions. [2022-07-22 17:28:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:28:07,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:07,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:07,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:28:07,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:07,165 INFO L85 PathProgramCache]: Analyzing trace with hash 331728347, now seen corresponding path program 1 times [2022-07-22 17:28:07,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:07,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822578726] [2022-07-22 17:28:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:07,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:28:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:28:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:28:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:28:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:28:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:28:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:07,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:07,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822578726] [2022-07-22 17:28:07,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822578726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:07,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:07,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085964555] [2022-07-22 17:28:07,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:07,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:07,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:07,229 INFO L87 Difference]: Start difference. First operand 1521 states and 2553 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:08,115 INFO L93 Difference]: Finished difference Result 3732 states and 6364 transitions. [2022-07-22 17:28:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:08,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-22 17:28:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:08,126 INFO L225 Difference]: With dead ends: 3732 [2022-07-22 17:28:08,126 INFO L226 Difference]: Without dead ends: 2457 [2022-07-22 17:28:08,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:08,131 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1063 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:08,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 1248 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:28:08,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2022-07-22 17:28:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2290. [2022-07-22 17:28:08,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2290 states, 1867 states have (on average 1.615961435457954) internal successors, (3017), 1872 states have internal predecessors, (3017), 401 states have call successors, (401), 17 states have call predecessors, (401), 21 states have return successors, (448), 400 states have call predecessors, (448), 400 states have call successors, (448) [2022-07-22 17:28:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3866 transitions. [2022-07-22 17:28:08,240 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3866 transitions. Word has length 114 [2022-07-22 17:28:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:08,240 INFO L495 AbstractCegarLoop]: Abstraction has 2290 states and 3866 transitions. [2022-07-22 17:28:08,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3866 transitions. [2022-07-22 17:28:08,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:28:08,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:08,247 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:08,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:28:08,247 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash -11216017, now seen corresponding path program 1 times [2022-07-22 17:28:08,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:08,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940122130] [2022-07-22 17:28:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:08,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:28:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:28:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:28:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:28:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:28:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:28:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:08,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:08,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940122130] [2022-07-22 17:28:08,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940122130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:08,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:08,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:08,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532877830] [2022-07-22 17:28:08,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:08,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:08,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:08,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:08,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:08,307 INFO L87 Difference]: Start difference. First operand 2290 states and 3866 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:09,170 INFO L93 Difference]: Finished difference Result 5526 states and 9498 transitions. [2022-07-22 17:28:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:09,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-07-22 17:28:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:09,186 INFO L225 Difference]: With dead ends: 5526 [2022-07-22 17:28:09,186 INFO L226 Difference]: Without dead ends: 3686 [2022-07-22 17:28:09,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:09,192 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1060 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:09,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 1251 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:28:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2022-07-22 17:28:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3519. [2022-07-22 17:28:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3519 states, 2917 states have (on average 1.6194720603359616) internal successors, (4724), 2922 states have internal predecessors, (4724), 580 states have call successors, (580), 17 states have call predecessors, (580), 21 states have return successors, (653), 579 states have call predecessors, (653), 579 states have call successors, (653) [2022-07-22 17:28:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 5957 transitions. [2022-07-22 17:28:09,368 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 5957 transitions. Word has length 115 [2022-07-22 17:28:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:09,368 INFO L495 AbstractCegarLoop]: Abstraction has 3519 states and 5957 transitions. [2022-07-22 17:28:09,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 5957 transitions. [2022-07-22 17:28:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 17:28:09,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:09,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:09,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:28:09,377 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 541080255, now seen corresponding path program 1 times [2022-07-22 17:28:09,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:09,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832289668] [2022-07-22 17:28:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:09,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:28:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:28:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:28:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:28:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:28:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:28:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:09,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:09,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832289668] [2022-07-22 17:28:09,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832289668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:09,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:09,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382028874] [2022-07-22 17:28:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:09,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:09,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:09,448 INFO L87 Difference]: Start difference. First operand 3519 states and 5957 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:10,438 INFO L93 Difference]: Finished difference Result 8474 states and 14645 transitions. [2022-07-22 17:28:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2022-07-22 17:28:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:10,460 INFO L225 Difference]: With dead ends: 8474 [2022-07-22 17:28:10,460 INFO L226 Difference]: Without dead ends: 5717 [2022-07-22 17:28:10,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:10,470 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1058 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:10,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1268 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:28:10,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5717 states. [2022-07-22 17:28:10,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5717 to 5550. [2022-07-22 17:28:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5550 states, 4572 states have (on average 1.6132983377077865) internal successors, (7376), 4577 states have internal predecessors, (7376), 956 states have call successors, (956), 17 states have call predecessors, (956), 21 states have return successors, (1073), 955 states have call predecessors, (1073), 955 states have call successors, (1073) [2022-07-22 17:28:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 9405 transitions. [2022-07-22 17:28:10,768 INFO L78 Accepts]: Start accepts. Automaton has 5550 states and 9405 transitions. Word has length 116 [2022-07-22 17:28:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:10,768 INFO L495 AbstractCegarLoop]: Abstraction has 5550 states and 9405 transitions. [2022-07-22 17:28:10,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5550 states and 9405 transitions. [2022-07-22 17:28:10,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 17:28:10,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:10,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:10,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:28:10,780 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:10,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:10,781 INFO L85 PathProgramCache]: Analyzing trace with hash 11871883, now seen corresponding path program 1 times [2022-07-22 17:28:10,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:10,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486521375] [2022-07-22 17:28:10,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:10,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:28:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:28:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:28:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:28:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:28:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:28:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:10,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:10,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486521375] [2022-07-22 17:28:10,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486521375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:10,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:10,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:10,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743617570] [2022-07-22 17:28:10,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:10,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:10,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:10,851 INFO L87 Difference]: Start difference. First operand 5550 states and 9405 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:12,094 INFO L93 Difference]: Finished difference Result 13811 states and 23866 transitions. [2022-07-22 17:28:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:12,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-07-22 17:28:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:12,139 INFO L225 Difference]: With dead ends: 13811 [2022-07-22 17:28:12,139 INFO L226 Difference]: Without dead ends: 9400 [2022-07-22 17:28:12,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:12,152 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1056 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:12,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1253 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:28:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2022-07-22 17:28:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 9233. [2022-07-22 17:28:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9233 states, 7649 states have (on average 1.6109295332723232) internal successors, (12322), 7654 states have internal predecessors, (12322), 1562 states have call successors, (1562), 17 states have call predecessors, (1562), 21 states have return successors, (1757), 1561 states have call predecessors, (1757), 1561 states have call successors, (1757) [2022-07-22 17:28:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9233 states to 9233 states and 15641 transitions. [2022-07-22 17:28:12,563 INFO L78 Accepts]: Start accepts. Automaton has 9233 states and 15641 transitions. Word has length 117 [2022-07-22 17:28:12,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:12,563 INFO L495 AbstractCegarLoop]: Abstraction has 9233 states and 15641 transitions. [2022-07-22 17:28:12,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:12,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9233 states and 15641 transitions. [2022-07-22 17:28:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 17:28:12,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:12,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:12,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:28:12,578 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1020827343, now seen corresponding path program 1 times [2022-07-22 17:28:12,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:12,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812746602] [2022-07-22 17:28:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:12,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:28:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:28:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:28:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:28:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:28:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:28:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:12,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812746602] [2022-07-22 17:28:12,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812746602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:12,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:12,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:12,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733018821] [2022-07-22 17:28:12,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:12,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:12,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:12,643 INFO L87 Difference]: Start difference. First operand 9233 states and 15641 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:14,003 INFO L93 Difference]: Finished difference Result 23995 states and 41412 transitions. [2022-07-22 17:28:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-07-22 17:28:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:14,052 INFO L225 Difference]: With dead ends: 23995 [2022-07-22 17:28:14,052 INFO L226 Difference]: Without dead ends: 16353 [2022-07-22 17:28:14,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:14,073 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1054 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:14,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1301 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:28:14,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16353 states. [2022-07-22 17:28:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16353 to 16186. [2022-07-22 17:28:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16186 states, 13399 states have (on average 1.6019105903425628) internal successors, (21464), 13404 states have internal predecessors, (21464), 2765 states have call successors, (2765), 17 states have call predecessors, (2765), 21 states have return successors, (3104), 2764 states have call predecessors, (3104), 2764 states have call successors, (3104) [2022-07-22 17:28:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16186 states to 16186 states and 27333 transitions. [2022-07-22 17:28:15,055 INFO L78 Accepts]: Start accepts. Automaton has 16186 states and 27333 transitions. Word has length 118 [2022-07-22 17:28:15,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:15,055 INFO L495 AbstractCegarLoop]: Abstraction has 16186 states and 27333 transitions. [2022-07-22 17:28:15,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 16186 states and 27333 transitions. [2022-07-22 17:28:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 17:28:15,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:15,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:15,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:28:15,087 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1052969078, now seen corresponding path program 1 times [2022-07-22 17:28:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:15,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561651923] [2022-07-22 17:28:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:15,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:28:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:28:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:28:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:28:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:28:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:28:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:15,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:15,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561651923] [2022-07-22 17:28:15,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561651923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:15,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:15,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:15,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319194446] [2022-07-22 17:28:15,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:15,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:15,155 INFO L87 Difference]: Start difference. First operand 16186 states and 27333 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:16,891 INFO L93 Difference]: Finished difference Result 42961 states and 74011 transitions. [2022-07-22 17:28:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-22 17:28:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:17,040 INFO L225 Difference]: With dead ends: 42961 [2022-07-22 17:28:17,041 INFO L226 Difference]: Without dead ends: 29008 [2022-07-22 17:28:17,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:17,072 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1053 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:17,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1252 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:28:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29008 states. [2022-07-22 17:28:18,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29008 to 28841. [2022-07-22 17:28:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28841 states, 24015 states have (on average 1.597668124089111) internal successors, (38368), 24020 states have internal predecessors, (38368), 4804 states have call successors, (4804), 17 states have call predecessors, (4804), 21 states have return successors, (5417), 4803 states have call predecessors, (5417), 4803 states have call successors, (5417) [2022-07-22 17:28:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28841 states to 28841 states and 48589 transitions. [2022-07-22 17:28:18,400 INFO L78 Accepts]: Start accepts. Automaton has 28841 states and 48589 transitions. Word has length 119 [2022-07-22 17:28:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:18,401 INFO L495 AbstractCegarLoop]: Abstraction has 28841 states and 48589 transitions. [2022-07-22 17:28:18,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 28841 states and 48589 transitions. [2022-07-22 17:28:18,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 17:28:18,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:18,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:18,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:28:18,425 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:18,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1710858159, now seen corresponding path program 1 times [2022-07-22 17:28:18,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:18,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017451001] [2022-07-22 17:28:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:18,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:28:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:28:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:28:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:28:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:28:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:28:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:18,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017451001] [2022-07-22 17:28:18,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017451001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:18,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:18,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:18,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900238613] [2022-07-22 17:28:18,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:18,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:18,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:18,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:18,529 INFO L87 Difference]: Start difference. First operand 28841 states and 48589 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:21,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:21,146 INFO L93 Difference]: Finished difference Result 78723 states and 134770 transitions. [2022-07-22 17:28:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:21,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-22 17:28:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:21,521 INFO L225 Difference]: With dead ends: 78723 [2022-07-22 17:28:21,534 INFO L226 Difference]: Without dead ends: 52887 [2022-07-22 17:28:21,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:21,592 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1051 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:21,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1255 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:28:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52887 states. [2022-07-22 17:28:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52887 to 52720. [2022-07-22 17:28:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52720 states, 44179 states have (on average 1.5920912650806944) internal successors, (70337), 44184 states have internal predecessors, (70337), 8519 states have call successors, (8519), 17 states have call predecessors, (8519), 21 states have return successors, (9664), 8518 states have call predecessors, (9664), 8518 states have call successors, (9664) [2022-07-22 17:28:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52720 states to 52720 states and 88520 transitions. [2022-07-22 17:28:23,778 INFO L78 Accepts]: Start accepts. Automaton has 52720 states and 88520 transitions. Word has length 120 [2022-07-22 17:28:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:23,778 INFO L495 AbstractCegarLoop]: Abstraction has 52720 states and 88520 transitions. [2022-07-22 17:28:23,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 52720 states and 88520 transitions. [2022-07-22 17:28:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 17:28:23,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:23,796 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:23,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:28:23,797 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash 655942090, now seen corresponding path program 1 times [2022-07-22 17:28:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:23,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261337004] [2022-07-22 17:28:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:23,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:28:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:28:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:28:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:28:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:28:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:28:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261337004] [2022-07-22 17:28:24,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261337004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:24,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:24,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:28:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125513561] [2022-07-22 17:28:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:24,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:28:24,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:28:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:28:24,201 INFO L87 Difference]: Start difference. First operand 52720 states and 88520 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:27,951 INFO L93 Difference]: Finished difference Result 98494 states and 168957 transitions. [2022-07-22 17:28:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:28:27,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-07-22 17:28:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:28,441 INFO L225 Difference]: With dead ends: 98494 [2022-07-22 17:28:28,441 INFO L226 Difference]: Without dead ends: 98346 [2022-07-22 17:28:28,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:28:28,477 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1048 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:28,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1253 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:28:28,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98346 states. [2022-07-22 17:28:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98346 to 98179. [2022-07-22 17:28:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98179 states, 82839 states have (on average 1.585086734509108) internal successors, (131307), 82844 states have internal predecessors, (131307), 15318 states have call successors, (15318), 17 states have call predecessors, (15318), 21 states have return successors, (17509), 15317 states have call predecessors, (17509), 15317 states have call successors, (17509) [2022-07-22 17:28:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98179 states to 98179 states and 164134 transitions. [2022-07-22 17:28:32,942 INFO L78 Accepts]: Start accepts. Automaton has 98179 states and 164134 transitions. Word has length 121 [2022-07-22 17:28:32,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:32,942 INFO L495 AbstractCegarLoop]: Abstraction has 98179 states and 164134 transitions. [2022-07-22 17:28:32,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:32,942 INFO L276 IsEmpty]: Start isEmpty. Operand 98179 states and 164134 transitions. [2022-07-22 17:28:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 17:28:32,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:32,965 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:32,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:28:32,965 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash 232974128, now seen corresponding path program 1 times [2022-07-22 17:28:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:32,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915221747] [2022-07-22 17:28:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:28:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:28:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:28:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:28:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:28:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:28:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:33,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915221747] [2022-07-22 17:28:33,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915221747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:33,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:33,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:28:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524708527] [2022-07-22 17:28:33,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:28:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:28:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:28:33,059 INFO L87 Difference]: Start difference. First operand 98179 states and 164134 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:38,838 INFO L93 Difference]: Finished difference Result 99153 states and 168883 transitions. [2022-07-22 17:28:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 17:28:38,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-07-22 17:28:38,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:39,197 INFO L225 Difference]: With dead ends: 99153 [2022-07-22 17:28:39,197 INFO L226 Difference]: Without dead ends: 99013 [2022-07-22 17:28:39,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2022-07-22 17:28:39,237 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 2124 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 3834 mSolverCounterSat, 1136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 4970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 3834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:39,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 1806 Invalid, 4970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1136 Valid, 3834 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 17:28:39,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99013 states. [2022-07-22 17:28:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99013 to 98321. [2022-07-22 17:28:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98321 states, 82954 states have (on average 1.5848783663235047) internal successors, (131472), 82959 states have internal predecessors, (131472), 15334 states have call successors, (15334), 26 states have call predecessors, (15334), 32 states have return successors, (17529), 15335 states have call predecessors, (17529), 15332 states have call successors, (17529) [2022-07-22 17:28:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98321 states to 98321 states and 164335 transitions. [2022-07-22 17:28:43,883 INFO L78 Accepts]: Start accepts. Automaton has 98321 states and 164335 transitions. Word has length 122 [2022-07-22 17:28:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:43,884 INFO L495 AbstractCegarLoop]: Abstraction has 98321 states and 164335 transitions. [2022-07-22 17:28:43,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:28:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 98321 states and 164335 transitions. [2022-07-22 17:28:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 17:28:43,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:43,945 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:43,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:28:43,945 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:43,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash -400644020, now seen corresponding path program 1 times [2022-07-22 17:28:43,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:43,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430561312] [2022-07-22 17:28:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:43,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:28:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:28:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:28:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:28:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:28:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:28:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:44,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430561312] [2022-07-22 17:28:44,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430561312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:44,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:44,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 17:28:44,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455024682] [2022-07-22 17:28:44,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:44,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 17:28:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 17:28:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:28:44,167 INFO L87 Difference]: Start difference. First operand 98321 states and 164335 transitions. Second operand has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 10 states have internal predecessors, (81), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-22 17:28:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:28:49,671 INFO L93 Difference]: Finished difference Result 99345 states and 169150 transitions. [2022-07-22 17:28:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 17:28:49,672 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 10 states have internal predecessors, (81), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 123 [2022-07-22 17:28:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:28:50,030 INFO L225 Difference]: With dead ends: 99345 [2022-07-22 17:28:50,030 INFO L226 Difference]: Without dead ends: 98675 [2022-07-22 17:28:50,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 17:28:50,083 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1853 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 5513 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 6240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 5513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:28:50,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 2406 Invalid, 6240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 5513 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 17:28:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98675 states. [2022-07-22 17:28:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98675 to 98358. [2022-07-22 17:28:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98358 states, 82983 states have (on average 1.584806526637986) internal successors, (131512), 82991 states have internal predecessors, (131512), 15340 states have call successors, (15340), 27 states have call predecessors, (15340), 34 states have return successors, (17539), 15339 states have call predecessors, (17539), 15338 states have call successors, (17539) [2022-07-22 17:28:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98358 states to 98358 states and 164391 transitions. [2022-07-22 17:28:54,820 INFO L78 Accepts]: Start accepts. Automaton has 98358 states and 164391 transitions. Word has length 123 [2022-07-22 17:28:54,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:28:54,820 INFO L495 AbstractCegarLoop]: Abstraction has 98358 states and 164391 transitions. [2022-07-22 17:28:54,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 10 states have internal predecessors, (81), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-22 17:28:54,820 INFO L276 IsEmpty]: Start isEmpty. Operand 98358 states and 164391 transitions. [2022-07-22 17:28:54,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 17:28:54,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:28:54,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:28:54,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 17:28:54,848 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:28:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:28:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash 505711590, now seen corresponding path program 1 times [2022-07-22 17:28:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:28:54,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22145466] [2022-07-22 17:28:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:28:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:28:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:28:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:28:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:54,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:28:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:28:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:54,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:28:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:28:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:28:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:28:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:28:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:28:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:28:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 17:28:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:28:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 17:28:55,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:28:55,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22145466] [2022-07-22 17:28:55,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22145466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:28:55,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:28:55,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:28:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671505153] [2022-07-22 17:28:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:28:55,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:28:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:28:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:28:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:28:55,033 INFO L87 Difference]: Start difference. First operand 98358 states and 164391 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12)