./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_product28.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 619b5b07f7bee6d460265c38ff6f46d0f3c88b87f6fc28a24021d9529c74e42f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:08:00,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:08:00,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:08:00,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:08:00,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:08:00,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:08:00,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:08:00,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:08:00,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:08:00,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:08:00,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:08:00,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:08:00,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:08:00,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:08:00,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:08:00,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:08:00,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:08:00,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:08:00,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:08:00,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:08:00,834 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:08:00,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:08:00,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:08:00,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:08:00,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:08:00,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:08:00,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:08:00,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:08:00,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:08:00,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:08:00,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:08:00,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:08:00,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:08:00,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:08:00,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:08:00,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:08:00,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:08:00,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:08:00,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:08:00,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:08:00,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:08:00,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:08:00,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:08:00,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:08:00,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:08:00,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:08:00,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:08:00,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:08:00,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:08:00,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:08:00,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:08:00,876 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:08:00,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:08:00,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:08:00,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:08:00,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:08:00,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:08:00,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:08:00,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:08:00,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:08:00,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:08:00,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:08:00,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:08:00,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:08:00,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:08:00,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:08:00,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:08:00,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:08:00,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:08:00,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:08:00,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:08:00,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:08:00,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:08:00,881 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:08:00,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:08:00,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:08:00,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619b5b07f7bee6d460265c38ff6f46d0f3c88b87f6fc28a24021d9529c74e42f [2022-07-12 06:08:01,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:08:01,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:08:01,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:08:01,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:08:01,137 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:08:01,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c [2022-07-12 06:08:01,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528f63a69/9053815d1ff5483d985f18b583c551b9/FLAGc3173b8dc [2022-07-12 06:08:01,687 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:08:01,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c [2022-07-12 06:08:01,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528f63a69/9053815d1ff5483d985f18b583c551b9/FLAGc3173b8dc [2022-07-12 06:08:02,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528f63a69/9053815d1ff5483d985f18b583c551b9 [2022-07-12 06:08:02,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:08:02,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:08:02,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:08:02,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:08:02,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:08:02,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:02,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47eff94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02, skipping insertion in model container [2022-07-12 06:08:02,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:02,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:08:02,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:08:02,605 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_product28.cil.c[8467,8480] [2022-07-12 06:08:02,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:08:02,824 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:08:02,855 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_product28.cil.c[8467,8480] [2022-07-12 06:08:02,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:08:02,936 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:08:02,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02 WrapperNode [2022-07-12 06:08:02,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:08:02,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:08:02,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:08:02,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:08:02,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:02,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,030 INFO L137 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 854 [2022-07-12 06:08:03,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:08:03,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:08:03,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:08:03,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:08:03,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:08:03,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:08:03,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:08:03,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:08:03,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (1/1) ... [2022-07-12 06:08:03,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:08:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:08:03,189 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) [2022-07-12 06:08:03,197 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 [2022-07-12 06:08:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-07-12 06:08:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-07-12 06:08:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-12 06:08:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-12 06:08:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-12 06:08:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-12 06:08:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-12 06:08:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-12 06:08:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-12 06:08:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-12 06:08:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-12 06:08:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-12 06:08:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-12 06:08:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-12 06:08:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-12 06:08:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-12 06:08:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-12 06:08:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-12 06:08:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-12 06:08:03,238 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-12 06:08:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-12 06:08:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-12 06:08:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-12 06:08:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-12 06:08:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-12 06:08:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:08:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-12 06:08:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-12 06:08:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-12 06:08:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-12 06:08:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-12 06:08:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-12 06:08:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-12 06:08:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-12 06:08:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-12 06:08:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-12 06:08:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-12 06:08:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-12 06:08:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-12 06:08:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-12 06:08:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-12 06:08:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-12 06:08:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-12 06:08:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-12 06:08:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:08:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-12 06:08:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-12 06:08:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:08:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:08:03,437 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:08:03,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:08:04,012 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:08:04,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:08:04,019 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:08:04,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:08:04 BoogieIcfgContainer [2022-07-12 06:08:04,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:08:04,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:08:04,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:08:04,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:08:04,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:08:02" (1/3) ... [2022-07-12 06:08:04,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659d807c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:08:04, skipping insertion in model container [2022-07-12 06:08:04,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:08:02" (2/3) ... [2022-07-12 06:08:04,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659d807c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:08:04, skipping insertion in model container [2022-07-12 06:08:04,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:08:04" (3/3) ... [2022-07-12 06:08:04,028 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2022-07-12 06:08:04,037 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:08:04,038 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:08:04,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:08:04,101 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@44245977, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e22a66b [2022-07-12 06:08:04,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:08:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-12 06:08:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 06:08:04,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:04,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:04,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:04,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:04,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1302958000, now seen corresponding path program 1 times [2022-07-12 06:08:04,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:04,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275517095] [2022-07-12 06:08:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:08:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:08:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:08:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:08:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:08:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:08:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:08:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:08:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:08:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:08:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 06:08:04,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:04,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275517095] [2022-07-12 06:08:04,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275517095] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:08:04,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272573785] [2022-07-12 06:08:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:04,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:08:04,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:08:04,521 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) [2022-07-12 06:08:04,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:08:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:04,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 06:08:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:08:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 06:08:04,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:08:04,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272573785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:04,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:08:04,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-12 06:08:04,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061849471] [2022-07-12 06:08:04,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:04,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:08:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:08:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:08:04,798 INFO L87 Difference]: Start difference. First operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:04,845 INFO L93 Difference]: Finished difference Result 505 states and 732 transitions. [2022-07-12 06:08:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:08:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-07-12 06:08:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:04,856 INFO L225 Difference]: With dead ends: 505 [2022-07-12 06:08:04,857 INFO L226 Difference]: Without dead ends: 320 [2022-07-12 06:08:04,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:08:04,863 INFO L413 NwaCegarLoop]: 481 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, 481 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 [2022-07-12 06:08:04,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:08:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-12 06:08:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-07-12 06:08:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 247 states have (on average 1.51417004048583) internal successors, (374), 250 states have internal predecessors, (374), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-12 06:08:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 473 transitions. [2022-07-12 06:08:04,908 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 473 transitions. Word has length 104 [2022-07-12 06:08:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:04,909 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 473 transitions. [2022-07-12 06:08:04,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 473 transitions. [2022-07-12 06:08:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 06:08:04,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:04,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:04,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 06:08:05,130 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 [2022-07-12 06:08:05,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash 598678511, now seen corresponding path program 1 times [2022-07-12 06:08:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:05,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300735313] [2022-07-12 06:08:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:05,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:08:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:08:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:08:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 06:08:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:08:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:08:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:08:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:08:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:08:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:08:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 06:08:05,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300735313] [2022-07-12 06:08:05,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300735313] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:08:05,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551536736] [2022-07-12 06:08:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:05,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:08:05,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:08:05,305 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) [2022-07-12 06:08:05,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 06:08:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 06:08:05,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:08:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 06:08:05,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:08:05,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551536736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:05,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:08:05,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-12 06:08:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888615646] [2022-07-12 06:08:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:05,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:08:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:08:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:08:05,617 INFO L87 Difference]: Start difference. First operand 320 states and 473 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:05,661 INFO L93 Difference]: Finished difference Result 495 states and 713 transitions. [2022-07-12 06:08:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:08:05,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-07-12 06:08:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:05,665 INFO L225 Difference]: With dead ends: 495 [2022-07-12 06:08:05,670 INFO L226 Difference]: Without dead ends: 323 [2022-07-12 06:08:05,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:08:05,676 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 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 [2022-07-12 06:08:05,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:08:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-12 06:08:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322. [2022-07-12 06:08:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 249 states have (on average 1.5100401606425702) internal successors, (376), 252 states have internal predecessors, (376), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-12 06:08:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 475 transitions. [2022-07-12 06:08:05,701 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 475 transitions. Word has length 105 [2022-07-12 06:08:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:05,703 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 475 transitions. [2022-07-12 06:08:05,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 475 transitions. [2022-07-12 06:08:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 06:08:05,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:05,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:05,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 06:08:05,923 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 [2022-07-12 06:08:05,924 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:05,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:05,924 INFO L85 PathProgramCache]: Analyzing trace with hash 120398534, now seen corresponding path program 1 times [2022-07-12 06:08:05,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:05,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620098393] [2022-07-12 06:08:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:05,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:05,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:08:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:08:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:08:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:08:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:08:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:08:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:08:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:08:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:08:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:08:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:08:06,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:06,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620098393] [2022-07-12 06:08:06,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620098393] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:08:06,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041868477] [2022-07-12 06:08:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:06,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:08:06,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:08:06,087 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) [2022-07-12 06:08:06,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 06:08:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:08:06,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:08:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 06:08:06,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:08:06,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041868477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:06,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:08:06,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-12 06:08:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029024090] [2022-07-12 06:08:06,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:06,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:08:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:08:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:08:06,322 INFO L87 Difference]: Start difference. First operand 322 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:06,364 INFO L93 Difference]: Finished difference Result 669 states and 1001 transitions. [2022-07-12 06:08:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:08:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-07-12 06:08:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:06,369 INFO L225 Difference]: With dead ends: 669 [2022-07-12 06:08:06,369 INFO L226 Difference]: Without dead ends: 374 [2022-07-12 06:08:06,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:08:06,373 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 99 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 919 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 [2022-07-12 06:08:06,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 919 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:08:06,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-12 06:08:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 366. [2022-07-12 06:08:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 282 states have (on average 1.524822695035461) internal successors, (430), 285 states have internal predecessors, (430), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-07-12 06:08:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 551 transitions. [2022-07-12 06:08:06,413 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 551 transitions. Word has length 111 [2022-07-12 06:08:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:06,414 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 551 transitions. [2022-07-12 06:08:06,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:06,415 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 551 transitions. [2022-07-12 06:08:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 06:08:06,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:06,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:06,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 06:08:06,639 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 [2022-07-12 06:08:06,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1427798971, now seen corresponding path program 1 times [2022-07-12 06:08:06,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317997979] [2022-07-12 06:08:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:06,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:08:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:08:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:08:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 06:08:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:08:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:08:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:08:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:08:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:08:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:08:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:08:06,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:06,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317997979] [2022-07-12 06:08:06,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317997979] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:08:06,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543097020] [2022-07-12 06:08:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:06,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:08:06,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:08:06,792 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) [2022-07-12 06:08:06,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 06:08:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 06:08:07,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:08:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 06:08:07,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:08:07,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543097020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:07,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:08:07,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-12 06:08:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494464508] [2022-07-12 06:08:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:08:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:08:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:08:07,105 INFO L87 Difference]: Start difference. First operand 366 states and 551 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 06:08:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:07,157 INFO L93 Difference]: Finished difference Result 723 states and 1092 transitions. [2022-07-12 06:08:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:08:07,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-07-12 06:08:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:07,160 INFO L225 Difference]: With dead ends: 723 [2022-07-12 06:08:07,160 INFO L226 Difference]: Without dead ends: 368 [2022-07-12 06:08:07,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:08:07,163 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 117 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1719 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 [2022-07-12 06:08:07,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1719 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:08:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-07-12 06:08:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-07-12 06:08:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 283 states have (on average 1.5229681978798586) internal successors, (431), 287 states have internal predecessors, (431), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2022-07-12 06:08:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 554 transitions. [2022-07-12 06:08:07,180 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 554 transitions. Word has length 112 [2022-07-12 06:08:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:07,180 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 554 transitions. [2022-07-12 06:08:07,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 06:08:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 554 transitions. [2022-07-12 06:08:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 06:08:07,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:07,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:07,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 06:08:07,399 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 [2022-07-12 06:08:07,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash -221648282, now seen corresponding path program 1 times [2022-07-12 06:08:07,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:07,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901920176] [2022-07-12 06:08:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:07,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 06:08:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 06:08:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 06:08:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:08:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:08:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:08:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:08:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:08:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:08:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 06:08:07,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:07,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901920176] [2022-07-12 06:08:07,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901920176] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:08:07,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410838295] [2022-07-12 06:08:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:07,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:08:07,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:08:07,527 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) [2022-07-12 06:08:07,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 06:08:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:07,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 06:08:07,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:08:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 06:08:07,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:08:07,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410838295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:07,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:08:07,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-12 06:08:07,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74596690] [2022-07-12 06:08:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:07,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:08:07,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:07,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:08:07,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:08:07,832 INFO L87 Difference]: Start difference. First operand 368 states and 554 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 06:08:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:07,884 INFO L93 Difference]: Finished difference Result 725 states and 1097 transitions. [2022-07-12 06:08:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:08:07,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-07-12 06:08:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:07,886 INFO L225 Difference]: With dead ends: 725 [2022-07-12 06:08:07,887 INFO L226 Difference]: Without dead ends: 370 [2022-07-12 06:08:07,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:08:07,888 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 116 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1708 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 [2022-07-12 06:08:07,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1708 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:08:07,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-07-12 06:08:07,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-07-12 06:08:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2022-07-12 06:08:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 560 transitions. [2022-07-12 06:08:07,905 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 560 transitions. Word has length 113 [2022-07-12 06:08:07,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:07,907 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 560 transitions. [2022-07-12 06:08:07,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 06:08:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 560 transitions. [2022-07-12 06:08:07,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 06:08:07,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:07,909 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:07,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 06:08:08,124 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 [2022-07-12 06:08:08,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:08,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:08,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1645047527, now seen corresponding path program 1 times [2022-07-12 06:08:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:08,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391705815] [2022-07-12 06:08:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:08,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:08:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 06:08:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:08:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:08:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:08:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:08:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:08:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:08:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:08:08,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:08,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391705815] [2022-07-12 06:08:08,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391705815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:08,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:08,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 06:08:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958923332] [2022-07-12 06:08:08,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:08,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:08:08,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:08:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:08:08,222 INFO L87 Difference]: Start difference. First operand 370 states and 560 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 06:08:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:09,386 INFO L93 Difference]: Finished difference Result 788 states and 1199 transitions. [2022-07-12 06:08:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:08:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-07-12 06:08:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:09,389 INFO L225 Difference]: With dead ends: 788 [2022-07-12 06:08:09,389 INFO L226 Difference]: Without dead ends: 441 [2022-07-12 06:08:09,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:08:09,391 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 871 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:09,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1162 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:08:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-12 06:08:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2022-07-12 06:08:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2022-07-12 06:08:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 559 transitions. [2022-07-12 06:08:09,419 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 559 transitions. Word has length 114 [2022-07-12 06:08:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:09,419 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 559 transitions. [2022-07-12 06:08:09,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 06:08:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 559 transitions. [2022-07-12 06:08:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 06:08:09,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:09,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:09,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:08:09,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:09,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1269941286, now seen corresponding path program 2 times [2022-07-12 06:08:09,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:09,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231919084] [2022-07-12 06:08:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:09,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 06:08:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:08:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:08:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:08:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:08:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:08:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:08:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:08:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:08:09,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:09,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231919084] [2022-07-12 06:08:09,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231919084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:09,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:09,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 06:08:09,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992748167] [2022-07-12 06:08:09,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:09,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:08:09,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:09,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:08:09,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:08:09,526 INFO L87 Difference]: Start difference. First operand 370 states and 559 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 06:08:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:10,519 INFO L93 Difference]: Finished difference Result 790 states and 1202 transitions. [2022-07-12 06:08:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:08:10,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-07-12 06:08:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:10,522 INFO L225 Difference]: With dead ends: 790 [2022-07-12 06:08:10,523 INFO L226 Difference]: Without dead ends: 443 [2022-07-12 06:08:10,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:08:10,525 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 867 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:10,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1163 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:08:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-12 06:08:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2022-07-12 06:08:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-07-12 06:08:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 562 transitions. [2022-07-12 06:08:10,547 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 562 transitions. Word has length 115 [2022-07-12 06:08:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:10,547 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 562 transitions. [2022-07-12 06:08:10,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 06:08:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 562 transitions. [2022-07-12 06:08:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 06:08:10,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:10,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:10,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:08:10,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1415974892, now seen corresponding path program 1 times [2022-07-12 06:08:10,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:10,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9158786] [2022-07-12 06:08:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:08:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:08:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:08:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:08:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:08:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:08:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:08:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 06:08:10,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:10,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9158786] [2022-07-12 06:08:10,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9158786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:10,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:10,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 06:08:10,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551107479] [2022-07-12 06:08:10,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:10,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 06:08:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 06:08:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:08:10,671 INFO L87 Difference]: Start difference. First operand 372 states and 562 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 06:08:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:12,191 INFO L93 Difference]: Finished difference Result 788 states and 1197 transitions. [2022-07-12 06:08:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 06:08:12,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-07-12 06:08:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:12,193 INFO L225 Difference]: With dead ends: 788 [2022-07-12 06:08:12,194 INFO L226 Difference]: Without dead ends: 443 [2022-07-12 06:08:12,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:08:12,195 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 973 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:12,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1443 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2895 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 06:08:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-12 06:08:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2022-07-12 06:08:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2022-07-12 06:08:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 561 transitions. [2022-07-12 06:08:12,212 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 561 transitions. Word has length 116 [2022-07-12 06:08:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:12,212 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 561 transitions. [2022-07-12 06:08:12,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 06:08:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 561 transitions. [2022-07-12 06:08:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 06:08:12,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:12,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:08:12,214 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1004440397, now seen corresponding path program 2 times [2022-07-12 06:08:12,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:12,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947293147] [2022-07-12 06:08:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:12,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 06:08:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:08:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:08:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:08:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:08:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:08:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:08:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 06:08:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:12,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947293147] [2022-07-12 06:08:12,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947293147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:12,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:12,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 06:08:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929873739] [2022-07-12 06:08:12,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:12,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 06:08:12,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 06:08:12,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:08:12,328 INFO L87 Difference]: Start difference. First operand 372 states and 561 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 06:08:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:13,805 INFO L93 Difference]: Finished difference Result 790 states and 1203 transitions. [2022-07-12 06:08:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 06:08:13,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2022-07-12 06:08:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:13,807 INFO L225 Difference]: With dead ends: 790 [2022-07-12 06:08:13,807 INFO L226 Difference]: Without dead ends: 445 [2022-07-12 06:08:13,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:08:13,809 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 969 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 3247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:13,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1444 Invalid, 3247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 06:08:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-07-12 06:08:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 374. [2022-07-12 06:08:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 293 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2022-07-12 06:08:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 567 transitions. [2022-07-12 06:08:13,824 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 567 transitions. Word has length 117 [2022-07-12 06:08:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:13,824 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 567 transitions. [2022-07-12 06:08:13,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 06:08:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 567 transitions. [2022-07-12 06:08:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 06:08:13,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:13,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:08:13,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash 945960143, now seen corresponding path program 1 times [2022-07-12 06:08:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:13,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101692415] [2022-07-12 06:08:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:08:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:08:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:08:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:08:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:08:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:08:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:08:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:13,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:13,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101692415] [2022-07-12 06:08:13,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101692415] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:08:13,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897750371] [2022-07-12 06:08:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:13,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:08:13,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:08:13,891 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) [2022-07-12 06:08:13,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 06:08:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:14,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:08:14,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:08:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:14,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:08:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:14,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897750371] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:08:14,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:08:14,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-12 06:08:14,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520132783] [2022-07-12 06:08:14,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:08:14,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:08:14,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:08:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:14,168 INFO L87 Difference]: Start difference. First operand 374 states and 567 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 06:08:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:15,418 INFO L93 Difference]: Finished difference Result 944 states and 1501 transitions. [2022-07-12 06:08:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:08:15,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 118 [2022-07-12 06:08:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:15,424 INFO L225 Difference]: With dead ends: 944 [2022-07-12 06:08:15,424 INFO L226 Difference]: Without dead ends: 772 [2022-07-12 06:08:15,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-12 06:08:15,426 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1062 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:15,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1533 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:08:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-07-12 06:08:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 677. [2022-07-12 06:08:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 525 states have (on average 1.5847619047619048) internal successors, (832), 532 states have internal predecessors, (832), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2022-07-12 06:08:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1103 transitions. [2022-07-12 06:08:15,478 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1103 transitions. Word has length 118 [2022-07-12 06:08:15,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:15,478 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1103 transitions. [2022-07-12 06:08:15,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 06:08:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1103 transitions. [2022-07-12 06:08:15,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 06:08:15,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:15,506 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] [2022-07-12 06:08:15,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 06:08:15,707 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 [2022-07-12 06:08:15,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:15,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:15,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2125577554, now seen corresponding path program 1 times [2022-07-12 06:08:15,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:15,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585352749] [2022-07-12 06:08:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:15,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:08:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:08:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:08:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:08:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:08:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:08:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:08:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:15,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:15,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585352749] [2022-07-12 06:08:15,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585352749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:15,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:15,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:15,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548569402] [2022-07-12 06:08:15,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:15,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:15,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:15,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:15,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:15,789 INFO L87 Difference]: Start difference. First operand 677 states and 1103 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:16,769 INFO L93 Difference]: Finished difference Result 1665 states and 2780 transitions. [2022-07-12 06:08:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:16,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-12 06:08:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:16,776 INFO L225 Difference]: With dead ends: 1665 [2022-07-12 06:08:16,776 INFO L226 Difference]: Without dead ends: 1056 [2022-07-12 06:08:16,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:16,779 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 860 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:16,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1041 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:08:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-07-12 06:08:16,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 977. [2022-07-12 06:08:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 761 states have (on average 1.5992115637319317) internal successors, (1217), 768 states have internal predecessors, (1217), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2022-07-12 06:08:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1626 transitions. [2022-07-12 06:08:16,834 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1626 transitions. Word has length 124 [2022-07-12 06:08:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:16,835 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1626 transitions. [2022-07-12 06:08:16,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1626 transitions. [2022-07-12 06:08:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 06:08:16,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:16,840 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] [2022-07-12 06:08:16,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:08:16,841 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:16,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:16,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1685662962, now seen corresponding path program 1 times [2022-07-12 06:08:16,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:16,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159567346] [2022-07-12 06:08:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:16,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:08:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:08:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:08:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:08:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:08:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:08:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 06:08:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:16,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159567346] [2022-07-12 06:08:16,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159567346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:16,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:16,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:16,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626118844] [2022-07-12 06:08:16,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:16,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:16,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:16,914 INFO L87 Difference]: Start difference. First operand 977 states and 1626 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:17,816 INFO L93 Difference]: Finished difference Result 2380 states and 4025 transitions. [2022-07-12 06:08:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:17,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-12 06:08:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:17,823 INFO L225 Difference]: With dead ends: 2380 [2022-07-12 06:08:17,823 INFO L226 Difference]: Without dead ends: 1524 [2022-07-12 06:08:17,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:17,826 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 858 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:17,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1020 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:08:17,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-07-12 06:08:17,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1445. [2022-07-12 06:08:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1134 states have (on average 1.6084656084656084) internal successors, (1824), 1141 states have internal predecessors, (1824), 284 states have call successors, (284), 22 states have call predecessors, (284), 26 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2022-07-12 06:08:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2423 transitions. [2022-07-12 06:08:17,888 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2423 transitions. Word has length 125 [2022-07-12 06:08:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:17,888 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2423 transitions. [2022-07-12 06:08:17,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2423 transitions. [2022-07-12 06:08:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 06:08:17,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:17,896 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] [2022-07-12 06:08:17,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:08:17,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash 187384112, now seen corresponding path program 1 times [2022-07-12 06:08:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:17,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433955035] [2022-07-12 06:08:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:17,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:08:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:08:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:08:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:08:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:08:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:08:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:08:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:17,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:17,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433955035] [2022-07-12 06:08:17,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433955035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:17,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:17,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:17,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691440636] [2022-07-12 06:08:17,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:17,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:17,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:17,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:17,989 INFO L87 Difference]: Start difference. First operand 1445 states and 2423 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:18,861 INFO L93 Difference]: Finished difference Result 3427 states and 5866 transitions. [2022-07-12 06:08:18,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:18,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-07-12 06:08:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:18,871 INFO L225 Difference]: With dead ends: 3427 [2022-07-12 06:08:18,871 INFO L226 Difference]: Without dead ends: 2228 [2022-07-12 06:08:18,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:18,875 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 856 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:18,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1016 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:08:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-07-12 06:08:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2149. [2022-07-12 06:08:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1715 states have (on average 1.6157434402332362) internal successors, (2771), 1722 states have internal predecessors, (2771), 407 states have call successors, (407), 22 states have call predecessors, (407), 26 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2022-07-12 06:08:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3632 transitions. [2022-07-12 06:08:18,971 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3632 transitions. Word has length 126 [2022-07-12 06:08:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:18,971 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3632 transitions. [2022-07-12 06:08:18,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3632 transitions. [2022-07-12 06:08:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-12 06:08:18,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:18,978 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, 1] [2022-07-12 06:08:18,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:08:18,979 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:18,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1884345073, now seen corresponding path program 1 times [2022-07-12 06:08:18,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:18,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028598682] [2022-07-12 06:08:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:18,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:08:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:08:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:08:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:08:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:08:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:08:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:08:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:19,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028598682] [2022-07-12 06:08:19,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028598682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:19,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:19,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:19,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614671696] [2022-07-12 06:08:19,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:19,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:19,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:19,040 INFO L87 Difference]: Start difference. First operand 2149 states and 3632 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:19,968 INFO L93 Difference]: Finished difference Result 5046 states and 8720 transitions. [2022-07-12 06:08:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-12 06:08:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:20,003 INFO L225 Difference]: With dead ends: 5046 [2022-07-12 06:08:20,004 INFO L226 Difference]: Without dead ends: 3347 [2022-07-12 06:08:20,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:20,024 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 854 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:20,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1016 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:08:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2022-07-12 06:08:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3268. [2022-07-12 06:08:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 2655 states have (on average 1.6203389830508474) internal successors, (4302), 2662 states have internal predecessors, (4302), 586 states have call successors, (586), 22 states have call predecessors, (586), 26 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2022-07-12 06:08:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 5547 transitions. [2022-07-12 06:08:20,338 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 5547 transitions. Word has length 127 [2022-07-12 06:08:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:20,338 INFO L495 AbstractCegarLoop]: Abstraction has 3268 states and 5547 transitions. [2022-07-12 06:08:20,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 5547 transitions. [2022-07-12 06:08:20,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 06:08:20,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:20,371 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, 1, 1] [2022-07-12 06:08:20,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:08:20,371 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1777285708, now seen corresponding path program 1 times [2022-07-12 06:08:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:20,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667565403] [2022-07-12 06:08:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:20,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:08:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:08:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:08:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:08:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:08:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:08:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:08:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:20,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:20,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667565403] [2022-07-12 06:08:20,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667565403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:20,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:20,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642624336] [2022-07-12 06:08:20,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:20,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:20,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:20,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:20,501 INFO L87 Difference]: Start difference. First operand 3268 states and 5547 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:21,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:21,519 INFO L93 Difference]: Finished difference Result 7964 states and 13819 transitions. [2022-07-12 06:08:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:21,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-12 06:08:21,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:21,560 INFO L225 Difference]: With dead ends: 7964 [2022-07-12 06:08:21,560 INFO L226 Difference]: Without dead ends: 5378 [2022-07-12 06:08:21,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:21,572 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 852 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:21,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1039 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:08:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-07-12 06:08:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5299. [2022-07-12 06:08:22,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 4310 states have (on average 1.6134570765661254) internal successors, (6954), 4317 states have internal predecessors, (6954), 962 states have call successors, (962), 22 states have call predecessors, (962), 26 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2022-07-12 06:08:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 8995 transitions. [2022-07-12 06:08:22,039 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 8995 transitions. Word has length 128 [2022-07-12 06:08:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:22,040 INFO L495 AbstractCegarLoop]: Abstraction has 5299 states and 8995 transitions. [2022-07-12 06:08:22,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 8995 transitions. [2022-07-12 06:08:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 06:08:22,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:22,055 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, 1, 1, 1] [2022-07-12 06:08:22,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:08:22,056 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2047787629, now seen corresponding path program 1 times [2022-07-12 06:08:22,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590621530] [2022-07-12 06:08:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:22,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:08:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:08:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:08:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:08:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:08:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:08:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 06:08:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:22,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590621530] [2022-07-12 06:08:22,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590621530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:22,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:22,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836540846] [2022-07-12 06:08:22,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:22,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:22,286 INFO L87 Difference]: Start difference. First operand 5299 states and 8995 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:23,317 INFO L93 Difference]: Finished difference Result 13106 states and 22728 transitions. [2022-07-12 06:08:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-12 06:08:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:23,384 INFO L225 Difference]: With dead ends: 13106 [2022-07-12 06:08:23,384 INFO L226 Difference]: Without dead ends: 8866 [2022-07-12 06:08:23,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:23,415 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 850 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:23,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1025 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:08:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2022-07-12 06:08:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8787. [2022-07-12 06:08:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8787 states, 7192 states have (on average 1.6112347052280311) internal successors, (11588), 7199 states have internal predecessors, (11588), 1568 states have call successors, (1568), 22 states have call predecessors, (1568), 26 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2022-07-12 06:08:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8787 states to 8787 states and 14919 transitions. [2022-07-12 06:08:23,934 INFO L78 Accepts]: Start accepts. Automaton has 8787 states and 14919 transitions. Word has length 129 [2022-07-12 06:08:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:23,934 INFO L495 AbstractCegarLoop]: Abstraction has 8787 states and 14919 transitions. [2022-07-12 06:08:23,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 8787 states and 14919 transitions. [2022-07-12 06:08:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 06:08:23,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:23,954 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, 1, 1, 1, 1] [2022-07-12 06:08:23,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:08:23,954 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:23,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash -236287054, now seen corresponding path program 1 times [2022-07-12 06:08:23,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:23,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945587085] [2022-07-12 06:08:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:23,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:23,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:08:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:08:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:08:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:08:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:08:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:08:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:08:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:24,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:24,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945587085] [2022-07-12 06:08:24,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945587085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:24,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:24,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901161768] [2022-07-12 06:08:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:24,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:24,017 INFO L87 Difference]: Start difference. First operand 8787 states and 14919 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:25,208 INFO L93 Difference]: Finished difference Result 22765 states and 39434 transitions. [2022-07-12 06:08:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-07-12 06:08:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:25,255 INFO L225 Difference]: With dead ends: 22765 [2022-07-12 06:08:25,256 INFO L226 Difference]: Without dead ends: 15459 [2022-07-12 06:08:25,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:25,275 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 848 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:25,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1063 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 06:08:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15459 states. [2022-07-12 06:08:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15459 to 15380. [2022-07-12 06:08:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15380 states, 12582 states have (on average 1.6018121125417262) internal successors, (20154), 12589 states have internal predecessors, (20154), 2771 states have call successors, (2771), 22 states have call predecessors, (2771), 26 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2022-07-12 06:08:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15380 states to 15380 states and 26035 transitions. [2022-07-12 06:08:26,039 INFO L78 Accepts]: Start accepts. Automaton has 15380 states and 26035 transitions. Word has length 130 [2022-07-12 06:08:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:26,039 INFO L495 AbstractCegarLoop]: Abstraction has 15380 states and 26035 transitions. [2022-07-12 06:08:26,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand 15380 states and 26035 transitions. [2022-07-12 06:08:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 06:08:26,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:26,077 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, 1, 1, 1, 1, 1] [2022-07-12 06:08:26,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:08:26,078 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:26,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:26,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1431568180, now seen corresponding path program 1 times [2022-07-12 06:08:26,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:26,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713546929] [2022-07-12 06:08:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:26,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:08:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:08:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:08:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:08:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:08:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:08:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:08:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:26,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:26,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713546929] [2022-07-12 06:08:26,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713546929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:26,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:26,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:26,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921376008] [2022-07-12 06:08:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:26,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:26,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:26,200 INFO L87 Difference]: Start difference. First operand 15380 states and 26035 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:27,799 INFO L93 Difference]: Finished difference Result 40721 states and 70417 transitions. [2022-07-12 06:08:27,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:27,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2022-07-12 06:08:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:27,915 INFO L225 Difference]: With dead ends: 40721 [2022-07-12 06:08:27,915 INFO L226 Difference]: Without dead ends: 27429 [2022-07-12 06:08:27,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:27,954 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 846 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:27,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1019 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:08:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27429 states. [2022-07-12 06:08:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27429 to 27350. [2022-07-12 06:08:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27350 states, 22513 states have (on average 1.5973881757206947) internal successors, (35962), 22520 states have internal predecessors, (35962), 4810 states have call successors, (4810), 22 states have call predecessors, (4810), 26 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2022-07-12 06:08:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27350 states to 27350 states and 46195 transitions. [2022-07-12 06:08:29,465 INFO L78 Accepts]: Start accepts. Automaton has 27350 states and 46195 transitions. Word has length 131 [2022-07-12 06:08:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:29,465 INFO L495 AbstractCegarLoop]: Abstraction has 27350 states and 46195 transitions. [2022-07-12 06:08:29,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:29,465 INFO L276 IsEmpty]: Start isEmpty. Operand 27350 states and 46195 transitions. [2022-07-12 06:08:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 06:08:29,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:29,491 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, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:29,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:08:29,492 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 302873936, now seen corresponding path program 1 times [2022-07-12 06:08:29,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:29,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000811753] [2022-07-12 06:08:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:29,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:08:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:08:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:08:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:08:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:08:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 06:08:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 06:08:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:29,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:29,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000811753] [2022-07-12 06:08:29,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000811753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:29,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:29,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119859016] [2022-07-12 06:08:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:29,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:29,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:29,569 INFO L87 Difference]: Start difference. First operand 27350 states and 46195 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:31,929 INFO L93 Difference]: Finished difference Result 74508 states and 128016 transitions. [2022-07-12 06:08:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:31,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-07-12 06:08:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:32,128 INFO L225 Difference]: With dead ends: 74508 [2022-07-12 06:08:32,128 INFO L226 Difference]: Without dead ends: 49978 [2022-07-12 06:08:32,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:32,193 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 844 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:32,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1021 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:08:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49978 states. [2022-07-12 06:08:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49978 to 49899. [2022-07-12 06:08:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49899 states, 41347 states have (on average 1.5914818487435607) internal successors, (65803), 41354 states have internal predecessors, (65803), 8525 states have call successors, (8525), 22 states have call predecessors, (8525), 26 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2022-07-12 06:08:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49899 states to 49899 states and 83998 transitions. [2022-07-12 06:08:35,165 INFO L78 Accepts]: Start accepts. Automaton has 49899 states and 83998 transitions. Word has length 132 [2022-07-12 06:08:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:35,166 INFO L495 AbstractCegarLoop]: Abstraction has 49899 states and 83998 transitions. [2022-07-12 06:08:35,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 49899 states and 83998 transitions. [2022-07-12 06:08:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:08:35,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:35,318 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:35,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:08:35,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:35,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1926694636, now seen corresponding path program 1 times [2022-07-12 06:08:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:35,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795848236] [2022-07-12 06:08:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:08:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:08:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:08:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:08:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:08:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:08:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 06:08:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:35,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795848236] [2022-07-12 06:08:35,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795848236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:35,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:35,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:08:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551500953] [2022-07-12 06:08:35,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:35,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:08:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:08:35,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:08:35,384 INFO L87 Difference]: Start difference. First operand 49899 states and 83998 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:39,239 INFO L93 Difference]: Finished difference Result 92994 states and 160147 transitions. [2022-07-12 06:08:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:08:39,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-07-12 06:08:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:39,562 INFO L225 Difference]: With dead ends: 92994 [2022-07-12 06:08:39,563 INFO L226 Difference]: Without dead ends: 92822 [2022-07-12 06:08:39,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:08:39,605 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 842 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:39,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1019 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:08:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92822 states. [2022-07-12 06:08:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92822 to 92743. [2022-07-12 06:08:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92743 states, 77392 states have (on average 1.5840009303287161) internal successors, (122589), 77399 states have internal predecessors, (122589), 15324 states have call successors, (15324), 22 states have call predecessors, (15324), 26 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2022-07-12 06:08:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92743 states to 92743 states and 155428 transitions. [2022-07-12 06:08:44,184 INFO L78 Accepts]: Start accepts. Automaton has 92743 states and 155428 transitions. Word has length 133 [2022-07-12 06:08:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:08:44,184 INFO L495 AbstractCegarLoop]: Abstraction has 92743 states and 155428 transitions. [2022-07-12 06:08:44,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 06:08:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 92743 states and 155428 transitions. [2022-07-12 06:08:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 06:08:44,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:08:44,222 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:08:44,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:08:44,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:08:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:08:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2135061647, now seen corresponding path program 1 times [2022-07-12 06:08:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:08:44,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222728196] [2022-07-12 06:08:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:08:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:08:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:08:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:08:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:08:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:08:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:08:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:08:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:08:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:08:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:08:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:08:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:08:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:08:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:08:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:08:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:08:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:08:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222728196] [2022-07-12 06:08:44,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222728196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:08:44,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:08:44,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 06:08:44,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908450631] [2022-07-12 06:08:44,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:08:44,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 06:08:44,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:08:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 06:08:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:08:44,377 INFO L87 Difference]: Start difference. First operand 92743 states and 155428 transitions. Second operand has 16 states, 15 states have (on average 6.0) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-12 06:08:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:08:54,674 INFO L93 Difference]: Finished difference Result 185252 states and 322366 transitions. [2022-07-12 06:08:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 06:08:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.0) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 134 [2022-07-12 06:08:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:08:55,582 INFO L225 Difference]: With dead ends: 185252 [2022-07-12 06:08:55,582 INFO L226 Difference]: Without dead ends: 185088 [2022-07-12 06:08:55,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=1833, Unknown=0, NotChecked=0, Total=2352 [2022-07-12 06:08:55,670 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 3396 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 7290 mSolverCounterSat, 1463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 8753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1463 IncrementalHoareTripleChecker+Valid, 7290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:08:55,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3396 Valid, 2926 Invalid, 8753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1463 Valid, 7290 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-12 06:08:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185088 states. [2022-07-12 06:09:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185088 to 184738. [2022-07-12 06:09:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184738 states, 154229 states have (on average 1.5848900012319342) internal successors, (244436), 154133 states have internal predecessors, (244436), 30443 states have call successors, (30443), 59 states have call predecessors, (30443), 65 states have return successors, (38094), 30551 states have call predecessors, (38094), 30440 states have call successors, (38094) [2022-07-12 06:09:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184738 states to 184738 states and 312973 transitions. [2022-07-12 06:09:05,313 INFO L78 Accepts]: Start accepts. Automaton has 184738 states and 312973 transitions. Word has length 134 [2022-07-12 06:09:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:09:05,314 INFO L495 AbstractCegarLoop]: Abstraction has 184738 states and 312973 transitions. [2022-07-12 06:09:05,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.0) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-12 06:09:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 184738 states and 312973 transitions. [2022-07-12 06:09:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 06:09:05,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:09:05,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:09:05,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 06:09:05,406 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:09:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:09:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash 36169315, now seen corresponding path program 1 times [2022-07-12 06:09:05,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:09:05,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652184365] [2022-07-12 06:09:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:09:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:09:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:09:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:09:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:09:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:09:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:09:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:09:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:09:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:09:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:09:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:09:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:09:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:09:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 06:09:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:09:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 06:09:05,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:09:05,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652184365] [2022-07-12 06:09:05,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652184365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:09:05,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:09:05,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 06:09:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158280910] [2022-07-12 06:09:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:09:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 06:09:05,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:09:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 06:09:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:09:05,907 INFO L87 Difference]: Start difference. First operand 184738 states and 312973 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13)