./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_spec11_product10.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 c9a35f77051831a79054d5620e487d68dd21285b0cc9c8ae29c469f997bd1ec7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:43:23,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:43:23,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:43:23,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:43:23,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:43:23,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:43:23,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:43:23,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:43:23,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:43:23,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:43:23,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:43:23,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:43:23,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:43:23,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:43:23,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:43:23,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:43:23,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:43:23,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:43:23,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:43:23,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:43:23,787 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:43:23,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:43:23,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:43:23,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:43:23,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:43:23,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:43:23,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:43:23,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:43:23,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:43:23,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:43:23,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:43:23,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:43:23,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:43:23,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:43:23,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:43:23,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:43:23,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:43:23,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:43:23,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:43:23,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:43:23,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:43:23,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:43:23,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:43:23,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:43:23,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:43:23,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:43:23,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:43:23,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:43:23,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:43:23,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:43:23,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:43:23,840 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:43:23,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:43:23,841 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:43:23,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:43:23,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:43:23,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:43:23,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:43:23,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:43:23,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:43:23,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:43:23,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:43:23,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:43:23,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:43:23,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:43:23,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:43:23,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:43:23,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:43:23,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:43:23,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:43:23,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:43:23,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:43:23,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:43:23,850 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:43:23,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:43:23,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:43:23,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9a35f77051831a79054d5620e487d68dd21285b0cc9c8ae29c469f997bd1ec7 [2022-07-21 04:43:24,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:43:24,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:43:24,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:43:24,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:43:24,146 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:43:24,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product10.cil.c [2022-07-21 04:43:24,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e05517a/7c97cf1c4a3b4c86a86c5b72f63814c7/FLAGacb641a42 [2022-07-21 04:43:24,687 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:43:24,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product10.cil.c [2022-07-21 04:43:24,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e05517a/7c97cf1c4a3b4c86a86c5b72f63814c7/FLAGacb641a42 [2022-07-21 04:43:25,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71e05517a/7c97cf1c4a3b4c86a86c5b72f63814c7 [2022-07-21 04:43:25,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:43:25,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:43:25,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:43:25,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:43:25,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:43:25,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c81be4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25, skipping insertion in model container [2022-07-21 04:43:25,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:43:25,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:43:25,695 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_spec11_product10.cil.c[53446,53459] [2022-07-21 04:43:25,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:43:25,725 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:43:25,776 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_spec11_product10.cil.c[53446,53459] [2022-07-21 04:43:25,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:43:25,796 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:43:25,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25 WrapperNode [2022-07-21 04:43:25,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:43:25,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:43:25,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:43:25,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:43:25,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,847 INFO L137 Inliner]: procedures = 110, calls = 135, calls flagged for inlining = 40, calls inlined = 33, statements flattened = 620 [2022-07-21 04:43:25,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:43:25,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:43:25,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:43:25,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:43:25,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:43:25,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:43:25,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:43:25,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:43:25,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (1/1) ... [2022-07-21 04:43:25,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:43:25,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:25,954 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) [2022-07-21 04:43:25,972 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 [2022-07-21 04:43:25,983 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-21 04:43:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-21 04:43:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-21 04:43:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-21 04:43:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-21 04:43:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-21 04:43:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-21 04:43:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-21 04:43:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-21 04:43:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-07-21 04:43:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-07-21 04:43:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-21 04:43:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-21 04:43:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:43:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-21 04:43:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-21 04:43:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-21 04:43:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-21 04:43:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-21 04:43:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-21 04:43:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:43:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:43:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:43:26,132 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:43:26,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:43:26,516 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:43:26,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:43:26,522 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:43:26,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:43:26 BoogieIcfgContainer [2022-07-21 04:43:26,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:43:26,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:43:26,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:43:26,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:43:26,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:43:25" (1/3) ... [2022-07-21 04:43:26,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175ffaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:43:26, skipping insertion in model container [2022-07-21 04:43:26,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:43:25" (2/3) ... [2022-07-21 04:43:26,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175ffaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:43:26, skipping insertion in model container [2022-07-21 04:43:26,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:43:26" (3/3) ... [2022-07-21 04:43:26,529 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product10.cil.c [2022-07-21 04:43:26,537 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:43:26,538 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:43:26,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:43:26,573 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@1080531d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ce26c2b [2022-07-21 04:43:26,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:43:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 126 states have internal predecessors, (183), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 04:43:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 04:43:26,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:26,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:26,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:26,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:26,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1155319339, now seen corresponding path program 1 times [2022-07-21 04:43:26,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:26,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168306053] [2022-07-21 04:43:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:26,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:43:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 04:43:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:43:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:43:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:43:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:43:26,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:26,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168306053] [2022-07-21 04:43:26,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168306053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:26,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91914917] [2022-07-21 04:43:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:26,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:26,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:26,927 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) [2022-07-21 04:43:26,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:43:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:43:27,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:43:27,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:27,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91914917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:27,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:27,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-21 04:43:27,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23781682] [2022-07-21 04:43:27,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:27,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:43:27,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:43:27,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:43:27,198 INFO L87 Difference]: Start difference. First operand has 154 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 126 states have internal predecessors, (183), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:27,224 INFO L93 Difference]: Finished difference Result 253 states and 353 transitions. [2022-07-21 04:43:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:43:27,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-07-21 04:43:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:27,231 INFO L225 Difference]: With dead ends: 253 [2022-07-21 04:43:27,232 INFO L226 Difference]: Without dead ends: 147 [2022-07-21 04:43:27,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:43:27,244 INFO L413 NwaCegarLoop]: 217 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, 217 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 [2022-07-21 04:43:27,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:43:27,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-21 04:43:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-07-21 04:43:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 118 states have (on average 1.4576271186440677) internal successors, (172), 119 states have internal predecessors, (172), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-21 04:43:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 209 transitions. [2022-07-21 04:43:27,285 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 209 transitions. Word has length 69 [2022-07-21 04:43:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:27,286 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 209 transitions. [2022-07-21 04:43:27,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:27,286 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 209 transitions. [2022-07-21 04:43:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 04:43:27,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:27,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:27,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:43:27,509 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 [2022-07-21 04:43:27,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:27,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1225704593, now seen corresponding path program 1 times [2022-07-21 04:43:27,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:27,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658310936] [2022-07-21 04:43:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:27,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:43:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:43:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 04:43:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:43:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:43:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:43:27,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:27,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658310936] [2022-07-21 04:43:27,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658310936] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:27,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843847339] [2022-07-21 04:43:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:27,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:27,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:27,639 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) [2022-07-21 04:43:27,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:43:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:27,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:43:27,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:43:27,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:27,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843847339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:27,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:27,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 04:43:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589941896] [2022-07-21 04:43:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:27,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:43:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:43:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:43:27,889 INFO L87 Difference]: Start difference. First operand 147 states and 209 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:27,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:27,909 INFO L93 Difference]: Finished difference Result 243 states and 334 transitions. [2022-07-21 04:43:27,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:43:27,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-07-21 04:43:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:27,911 INFO L225 Difference]: With dead ends: 243 [2022-07-21 04:43:27,911 INFO L226 Difference]: Without dead ends: 150 [2022-07-21 04:43:27,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:43:27,912 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 412 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 [2022-07-21 04:43:27,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 412 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:43:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-21 04:43:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2022-07-21 04:43:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 120 states have (on average 1.45) internal successors, (174), 121 states have internal predecessors, (174), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-21 04:43:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 211 transitions. [2022-07-21 04:43:27,923 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 211 transitions. Word has length 70 [2022-07-21 04:43:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:27,923 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 211 transitions. [2022-07-21 04:43:27,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 211 transitions. [2022-07-21 04:43:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 04:43:27,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:27,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:27,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:43:28,141 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 [2022-07-21 04:43:28,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:28,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:28,142 INFO L85 PathProgramCache]: Analyzing trace with hash 985064668, now seen corresponding path program 1 times [2022-07-21 04:43:28,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:28,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205566213] [2022-07-21 04:43:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:43:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:43:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:43:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:43:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:43:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:43:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:43:28,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:28,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205566213] [2022-07-21 04:43:28,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205566213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:28,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104056057] [2022-07-21 04:43:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:28,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:28,324 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) [2022-07-21 04:43:28,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:43:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 04:43:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 04:43:28,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:28,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104056057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:28,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:28,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-21 04:43:28,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821336503] [2022-07-21 04:43:28,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:28,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:43:28,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:43:28,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:43:28,627 INFO L87 Difference]: Start difference. First operand 149 states and 211 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:43:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:28,668 INFO L93 Difference]: Finished difference Result 291 states and 415 transitions. [2022-07-21 04:43:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:43:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-07-21 04:43:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:28,671 INFO L225 Difference]: With dead ends: 291 [2022-07-21 04:43:28,671 INFO L226 Difference]: Without dead ends: 151 [2022-07-21 04:43:28,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:43:28,673 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 81 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 715 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 [2022-07-21 04:43:28,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 715 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:43:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-21 04:43:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-21 04:43:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 121 states have (on average 1.4462809917355373) internal successors, (175), 123 states have internal predecessors, (175), 19 states have call successors, (19), 9 states have call predecessors, (19), 10 states have return successors, (20), 18 states have call predecessors, (20), 18 states have call successors, (20) [2022-07-21 04:43:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 214 transitions. [2022-07-21 04:43:28,683 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 214 transitions. Word has length 75 [2022-07-21 04:43:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:28,683 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 214 transitions. [2022-07-21 04:43:28,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:43:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 214 transitions. [2022-07-21 04:43:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 04:43:28,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:28,685 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:28,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:43:28,904 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 [2022-07-21 04:43:28,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1281092033, now seen corresponding path program 1 times [2022-07-21 04:43:28,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:28,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656827751] [2022-07-21 04:43:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:28,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:43:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 04:43:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:43:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:43:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:43:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:43:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:29,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656827751] [2022-07-21 04:43:29,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656827751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:29,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:29,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:43:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802949147] [2022-07-21 04:43:29,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:29,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:43:29,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:43:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:43:29,012 INFO L87 Difference]: Start difference. First operand 151 states and 214 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:43:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:29,710 INFO L93 Difference]: Finished difference Result 402 states and 589 transitions. [2022-07-21 04:43:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:43:29,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-21 04:43:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:29,717 INFO L225 Difference]: With dead ends: 402 [2022-07-21 04:43:29,717 INFO L226 Difference]: Without dead ends: 270 [2022-07-21 04:43:29,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:43:29,723 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 371 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:29,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 693 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 04:43:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-21 04:43:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 151. [2022-07-21 04:43:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 121 states have (on average 1.4462809917355373) internal successors, (175), 123 states have internal predecessors, (175), 19 states have call successors, (19), 9 states have call predecessors, (19), 10 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-07-21 04:43:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 213 transitions. [2022-07-21 04:43:29,762 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 213 transitions. Word has length 76 [2022-07-21 04:43:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:29,763 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 213 transitions. [2022-07-21 04:43:29,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:43:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 213 transitions. [2022-07-21 04:43:29,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 04:43:29,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:29,765 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:43:29,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 04:43:29,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1583544820, now seen corresponding path program 2 times [2022-07-21 04:43:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:29,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457682226] [2022-07-21 04:43:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:43:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:43:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:43:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:43:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:43:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:43:29,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:29,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457682226] [2022-07-21 04:43:29,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457682226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:29,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:29,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:43:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020463221] [2022-07-21 04:43:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:29,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:43:29,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:43:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:43:29,830 INFO L87 Difference]: Start difference. First operand 151 states and 213 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:43:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:30,503 INFO L93 Difference]: Finished difference Result 404 states and 592 transitions. [2022-07-21 04:43:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:43:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-07-21 04:43:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:30,508 INFO L225 Difference]: With dead ends: 404 [2022-07-21 04:43:30,508 INFO L226 Difference]: Without dead ends: 272 [2022-07-21 04:43:30,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:43:30,512 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 370 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:30,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 691 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 04:43:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-21 04:43:30,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 153. [2022-07-21 04:43:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 122 states have (on average 1.4426229508196722) internal successors, (176), 125 states have internal predecessors, (176), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 216 transitions. [2022-07-21 04:43:30,557 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 216 transitions. Word has length 77 [2022-07-21 04:43:30,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:30,557 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 216 transitions. [2022-07-21 04:43:30,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:43:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 216 transitions. [2022-07-21 04:43:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 04:43:30,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:30,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:30,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 04:43:30,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:30,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1541642854, now seen corresponding path program 1 times [2022-07-21 04:43:30,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:30,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090359909] [2022-07-21 04:43:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:30,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:43:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:43:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 04:43:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:43:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:43:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090359909] [2022-07-21 04:43:30,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090359909] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:30,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695439701] [2022-07-21 04:43:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:30,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:30,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:30,632 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) [2022-07-21 04:43:30,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:43:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:30,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:43:30,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:30,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:43:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:30,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695439701] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:43:30,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:43:30,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-21 04:43:30,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785003226] [2022-07-21 04:43:30,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:43:30,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:43:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:43:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:30,896 INFO L87 Difference]: Start difference. First operand 153 states and 216 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:43:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:31,444 INFO L93 Difference]: Finished difference Result 494 states and 751 transitions. [2022-07-21 04:43:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:43:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2022-07-21 04:43:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:31,447 INFO L225 Difference]: With dead ends: 494 [2022-07-21 04:43:31,447 INFO L226 Difference]: Without dead ends: 401 [2022-07-21 04:43:31,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:43:31,449 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 556 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:31,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 831 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 04:43:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-07-21 04:43:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 258. [2022-07-21 04:43:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 227 states have (on average 1.6079295154185023) internal successors, (365), 230 states have internal predecessors, (365), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 405 transitions. [2022-07-21 04:43:31,483 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 405 transitions. Word has length 78 [2022-07-21 04:43:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:31,483 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 405 transitions. [2022-07-21 04:43:31,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:43:31,484 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 405 transitions. [2022-07-21 04:43:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 04:43:31,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:31,486 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:31,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 04:43:31,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:31,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:31,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1040281410, now seen corresponding path program 1 times [2022-07-21 04:43:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:31,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919920314] [2022-07-21 04:43:31,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:31,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:43:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:43:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:43:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:43:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:43:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:31,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:31,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919920314] [2022-07-21 04:43:31,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919920314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:31,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:31,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:31,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141928269] [2022-07-21 04:43:31,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:31,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:31,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:31,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:31,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:31,783 INFO L87 Difference]: Start difference. First operand 258 states and 405 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:32,251 INFO L93 Difference]: Finished difference Result 719 states and 1158 transitions. [2022-07-21 04:43:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:32,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-07-21 04:43:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:32,253 INFO L225 Difference]: With dead ends: 719 [2022-07-21 04:43:32,253 INFO L226 Difference]: Without dead ends: 489 [2022-07-21 04:43:32,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:32,254 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 364 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:32,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 613 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-07-21 04:43:32,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 362. [2022-07-21 04:43:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 331 states have (on average 1.6525679758308156) internal successors, (547), 334 states have internal predecessors, (547), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 587 transitions. [2022-07-21 04:43:32,269 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 587 transitions. Word has length 85 [2022-07-21 04:43:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:32,270 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 587 transitions. [2022-07-21 04:43:32,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 587 transitions. [2022-07-21 04:43:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 04:43:32,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:32,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:32,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:43:32,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -718675378, now seen corresponding path program 1 times [2022-07-21 04:43:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:32,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400538447] [2022-07-21 04:43:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 04:43:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:43:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:43:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:43:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:43:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:32,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400538447] [2022-07-21 04:43:32,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400538447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:32,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:32,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:32,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499962192] [2022-07-21 04:43:32,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:32,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:32,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:32,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:32,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:32,323 INFO L87 Difference]: Start difference. First operand 362 states and 587 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:32,807 INFO L93 Difference]: Finished difference Result 952 states and 1572 transitions. [2022-07-21 04:43:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-07-21 04:43:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:32,809 INFO L225 Difference]: With dead ends: 952 [2022-07-21 04:43:32,810 INFO L226 Difference]: Without dead ends: 636 [2022-07-21 04:43:32,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:32,811 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 364 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:32,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 595 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-07-21 04:43:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 509. [2022-07-21 04:43:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 478 states have (on average 1.6820083682008369) internal successors, (804), 481 states have internal predecessors, (804), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 844 transitions. [2022-07-21 04:43:32,830 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 844 transitions. Word has length 86 [2022-07-21 04:43:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:32,830 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 844 transitions. [2022-07-21 04:43:32,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 844 transitions. [2022-07-21 04:43:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 04:43:32,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:32,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:32,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:43:32,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2093145248, now seen corresponding path program 1 times [2022-07-21 04:43:32,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:32,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851951599] [2022-07-21 04:43:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:43:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:43:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:43:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:43:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:43:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:32,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:32,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851951599] [2022-07-21 04:43:32,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851951599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:32,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:32,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:32,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211664272] [2022-07-21 04:43:32,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:32,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:32,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:32,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:32,913 INFO L87 Difference]: Start difference. First operand 509 states and 844 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:33,366 INFO L93 Difference]: Finished difference Result 1339 states and 2247 transitions. [2022-07-21 04:43:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-07-21 04:43:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:33,371 INFO L225 Difference]: With dead ends: 1339 [2022-07-21 04:43:33,372 INFO L226 Difference]: Without dead ends: 895 [2022-07-21 04:43:33,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:33,374 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 357 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:33,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 612 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-07-21 04:43:33,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 768. [2022-07-21 04:43:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 737 states have (on average 1.6906377204884668) internal successors, (1246), 740 states have internal predecessors, (1246), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1286 transitions. [2022-07-21 04:43:33,410 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1286 transitions. Word has length 87 [2022-07-21 04:43:33,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:33,410 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 1286 transitions. [2022-07-21 04:43:33,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1286 transitions. [2022-07-21 04:43:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 04:43:33,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:33,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:33,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:43:33,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash -161738404, now seen corresponding path program 1 times [2022-07-21 04:43:33,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:33,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550019635] [2022-07-21 04:43:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:43:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:43:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:43:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:43:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 04:43:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:33,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:33,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550019635] [2022-07-21 04:43:33,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550019635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:33,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:33,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:33,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087025437] [2022-07-21 04:43:33,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:33,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:33,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:33,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:33,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:33,468 INFO L87 Difference]: Start difference. First operand 768 states and 1286 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:33,939 INFO L93 Difference]: Finished difference Result 1966 states and 3325 transitions. [2022-07-21 04:43:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2022-07-21 04:43:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:33,944 INFO L225 Difference]: With dead ends: 1966 [2022-07-21 04:43:33,945 INFO L226 Difference]: Without dead ends: 1311 [2022-07-21 04:43:33,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:33,946 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 355 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:33,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 614 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-07-21 04:43:33,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1184. [2022-07-21 04:43:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1153 states have (on average 1.6886383347788378) internal successors, (1947), 1156 states have internal predecessors, (1947), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1987 transitions. [2022-07-21 04:43:33,982 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1987 transitions. Word has length 88 [2022-07-21 04:43:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:33,982 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1987 transitions. [2022-07-21 04:43:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1987 transitions. [2022-07-21 04:43:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 04:43:33,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:33,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 04:43:33,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1878401154, now seen corresponding path program 1 times [2022-07-21 04:43:33,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:33,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100532055] [2022-07-21 04:43:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:43:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 04:43:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:43:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:43:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 04:43:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:34,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100532055] [2022-07-21 04:43:34,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100532055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:34,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:34,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:34,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503111093] [2022-07-21 04:43:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:34,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:34,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:34,053 INFO L87 Difference]: Start difference. First operand 1184 states and 1987 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:34,577 INFO L93 Difference]: Finished difference Result 2991 states and 5070 transitions. [2022-07-21 04:43:34,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:34,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-07-21 04:43:34,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:34,584 INFO L225 Difference]: With dead ends: 2991 [2022-07-21 04:43:34,584 INFO L226 Difference]: Without dead ends: 2000 [2022-07-21 04:43:34,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:34,586 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 357 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:34,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 608 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2022-07-21 04:43:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1873. [2022-07-21 04:43:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1842 states have (on average 1.6818675352877308) internal successors, (3098), 1845 states have internal predecessors, (3098), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3138 transitions. [2022-07-21 04:43:34,645 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3138 transitions. Word has length 89 [2022-07-21 04:43:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:34,646 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3138 transitions. [2022-07-21 04:43:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3138 transitions. [2022-07-21 04:43:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 04:43:34,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:34,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:34,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:43:34,649 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:34,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1632926082, now seen corresponding path program 1 times [2022-07-21 04:43:34,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:34,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879104343] [2022-07-21 04:43:34,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:34,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:43:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:43:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:43:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:43:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 04:43:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:34,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:34,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879104343] [2022-07-21 04:43:34,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879104343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:34,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:34,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846691579] [2022-07-21 04:43:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:34,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:34,718 INFO L87 Difference]: Start difference. First operand 1873 states and 3138 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:35,215 INFO L93 Difference]: Finished difference Result 4473 states and 7597 transitions. [2022-07-21 04:43:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:35,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2022-07-21 04:43:35,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:35,224 INFO L225 Difference]: With dead ends: 4473 [2022-07-21 04:43:35,224 INFO L226 Difference]: Without dead ends: 2993 [2022-07-21 04:43:35,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:35,226 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 351 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:35,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 605 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2022-07-21 04:43:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2866. [2022-07-21 04:43:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2835 states have (on average 1.6783068783068784) internal successors, (4758), 2838 states have internal predecessors, (4758), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4798 transitions. [2022-07-21 04:43:35,350 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4798 transitions. Word has length 90 [2022-07-21 04:43:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:35,350 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4798 transitions. [2022-07-21 04:43:35,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4798 transitions. [2022-07-21 04:43:35,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 04:43:35,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:35,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:35,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:43:35,355 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 496921180, now seen corresponding path program 1 times [2022-07-21 04:43:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:35,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947398014] [2022-07-21 04:43:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:43:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:43:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:43:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:43:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:43:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:35,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947398014] [2022-07-21 04:43:35,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947398014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:35,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:35,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254927832] [2022-07-21 04:43:35,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:35,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:35,416 INFO L87 Difference]: Start difference. First operand 2866 states and 4798 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:35,944 INFO L93 Difference]: Finished difference Result 7262 states and 12297 transitions. [2022-07-21 04:43:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:35,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-07-21 04:43:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:35,961 INFO L225 Difference]: With dead ends: 7262 [2022-07-21 04:43:35,961 INFO L226 Difference]: Without dead ends: 4957 [2022-07-21 04:43:35,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:35,965 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 353 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:35,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 606 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:43:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2022-07-21 04:43:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4830. [2022-07-21 04:43:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4830 states, 4799 states have (on average 1.668264221712857) internal successors, (8006), 4802 states have internal predecessors, (8006), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 8046 transitions. [2022-07-21 04:43:36,150 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 8046 transitions. Word has length 91 [2022-07-21 04:43:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:36,150 INFO L495 AbstractCegarLoop]: Abstraction has 4830 states and 8046 transitions. [2022-07-21 04:43:36,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:36,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 8046 transitions. [2022-07-21 04:43:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 04:43:36,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:36,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:36,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:43:36,159 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:36,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:36,159 INFO L85 PathProgramCache]: Analyzing trace with hash 989429260, now seen corresponding path program 1 times [2022-07-21 04:43:36,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:36,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893706864] [2022-07-21 04:43:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:43:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:43:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:43:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:43:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:43:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:36,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:36,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893706864] [2022-07-21 04:43:36,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893706864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:36,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:36,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:36,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461301700] [2022-07-21 04:43:36,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:36,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:36,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:36,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:36,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:36,228 INFO L87 Difference]: Start difference. First operand 4830 states and 8046 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:36,931 INFO L93 Difference]: Finished difference Result 12583 states and 21165 transitions. [2022-07-21 04:43:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:36,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2022-07-21 04:43:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:36,959 INFO L225 Difference]: With dead ends: 12583 [2022-07-21 04:43:36,959 INFO L226 Difference]: Without dead ends: 8568 [2022-07-21 04:43:36,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:36,966 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 347 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:36,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 614 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8568 states. [2022-07-21 04:43:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8568 to 8441. [2022-07-21 04:43:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8441 states, 8410 states have (on average 1.656242568370987) internal successors, (13929), 8413 states have internal predecessors, (13929), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8441 states to 8441 states and 13969 transitions. [2022-07-21 04:43:37,245 INFO L78 Accepts]: Start accepts. Automaton has 8441 states and 13969 transitions. Word has length 92 [2022-07-21 04:43:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:37,246 INFO L495 AbstractCegarLoop]: Abstraction has 8441 states and 13969 transitions. [2022-07-21 04:43:37,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8441 states and 13969 transitions. [2022-07-21 04:43:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 04:43:37,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:37,267 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:37,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:43:37,267 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -658317433, now seen corresponding path program 2 times [2022-07-21 04:43:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:37,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268550729] [2022-07-21 04:43:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:43:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:43:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:43:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:43:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:43:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:43:37,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:37,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268550729] [2022-07-21 04:43:37,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268550729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:37,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:37,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:43:37,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942642877] [2022-07-21 04:43:37,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:37,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:43:37,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:37,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:43:37,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:43:37,335 INFO L87 Difference]: Start difference. First operand 8441 states and 13969 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:38,192 INFO L93 Difference]: Finished difference Result 15719 states and 26148 transitions. [2022-07-21 04:43:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:43:38,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-07-21 04:43:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:38,208 INFO L225 Difference]: With dead ends: 15719 [2022-07-21 04:43:38,208 INFO L226 Difference]: Without dead ends: 8568 [2022-07-21 04:43:38,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:43:38,215 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 519 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:38,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 880 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 04:43:38,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8568 states. [2022-07-21 04:43:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8568 to 8441. [2022-07-21 04:43:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8441 states, 8410 states have (on average 1.6399524375743162) internal successors, (13792), 8413 states have internal predecessors, (13792), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8441 states to 8441 states and 13832 transitions. [2022-07-21 04:43:38,493 INFO L78 Accepts]: Start accepts. Automaton has 8441 states and 13832 transitions. Word has length 93 [2022-07-21 04:43:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:38,493 INFO L495 AbstractCegarLoop]: Abstraction has 8441 states and 13832 transitions. [2022-07-21 04:43:38,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 8441 states and 13832 transitions. [2022-07-21 04:43:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 04:43:38,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:38,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:38,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:43:38,504 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash -110515526, now seen corresponding path program 1 times [2022-07-21 04:43:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:38,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297293767] [2022-07-21 04:43:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:43:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 04:43:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:43:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:43:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 04:43:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:38,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:38,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297293767] [2022-07-21 04:43:38,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297293767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:38,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:38,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:38,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428558523] [2022-07-21 04:43:38,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:38,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:38,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:38,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:38,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:38,554 INFO L87 Difference]: Start difference. First operand 8441 states and 13832 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:39,521 INFO L93 Difference]: Finished difference Result 22667 states and 37385 transitions. [2022-07-21 04:43:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:39,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-07-21 04:43:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:39,548 INFO L225 Difference]: With dead ends: 22667 [2022-07-21 04:43:39,548 INFO L226 Difference]: Without dead ends: 15364 [2022-07-21 04:43:39,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:39,556 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 350 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:39,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 605 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:39,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15364 states. [2022-07-21 04:43:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15364 to 15237. [2022-07-21 04:43:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15237 states, 15206 states have (on average 1.6238326976193609) internal successors, (24692), 15209 states have internal predecessors, (24692), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:40,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15237 states to 15237 states and 24732 transitions. [2022-07-21 04:43:40,117 INFO L78 Accepts]: Start accepts. Automaton has 15237 states and 24732 transitions. Word has length 93 [2022-07-21 04:43:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:40,117 INFO L495 AbstractCegarLoop]: Abstraction has 15237 states and 24732 transitions. [2022-07-21 04:43:40,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 15237 states and 24732 transitions. [2022-07-21 04:43:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-21 04:43:40,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:40,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:40,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:43:40,137 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:40,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash -515603026, now seen corresponding path program 1 times [2022-07-21 04:43:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:40,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232428706] [2022-07-21 04:43:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:40,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 04:43:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:43:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:43:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:43:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:43:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:40,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:40,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232428706] [2022-07-21 04:43:40,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232428706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:40,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:40,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:40,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835656229] [2022-07-21 04:43:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:40,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:40,204 INFO L87 Difference]: Start difference. First operand 15237 states and 24732 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:41,324 INFO L93 Difference]: Finished difference Result 42054 states and 68517 transitions. [2022-07-21 04:43:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:41,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2022-07-21 04:43:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:41,401 INFO L225 Difference]: With dead ends: 42054 [2022-07-21 04:43:41,401 INFO L226 Difference]: Without dead ends: 28355 [2022-07-21 04:43:41,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:41,427 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 343 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:41,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 613 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28355 states. [2022-07-21 04:43:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28355 to 28228. [2022-07-21 04:43:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28228 states, 28197 states have (on average 1.604461467532007) internal successors, (45241), 28200 states have internal predecessors, (45241), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28228 states to 28228 states and 45281 transitions. [2022-07-21 04:43:42,736 INFO L78 Accepts]: Start accepts. Automaton has 28228 states and 45281 transitions. Word has length 94 [2022-07-21 04:43:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:42,736 INFO L495 AbstractCegarLoop]: Abstraction has 28228 states and 45281 transitions. [2022-07-21 04:43:42,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 28228 states and 45281 transitions. [2022-07-21 04:43:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 04:43:42,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:42,753 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:42,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:43:42,754 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash -487009512, now seen corresponding path program 1 times [2022-07-21 04:43:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:42,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292595541] [2022-07-21 04:43:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:43:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:43:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:43:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:43:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:43:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:42,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:42,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292595541] [2022-07-21 04:43:42,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292595541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:42,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:42,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:43:42,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370250467] [2022-07-21 04:43:42,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:42,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:43:42,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:42,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:43:42,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:43:42,805 INFO L87 Difference]: Start difference. First operand 28228 states and 45281 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:44,577 INFO L93 Difference]: Finished difference Result 53492 states and 85684 transitions. [2022-07-21 04:43:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:43:44,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2022-07-21 04:43:44,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:44,712 INFO L225 Difference]: With dead ends: 53492 [2022-07-21 04:43:44,712 INFO L226 Difference]: Without dead ends: 53399 [2022-07-21 04:43:44,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:43:44,727 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 342 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:44,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 609 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:43:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53399 states. [2022-07-21 04:43:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53399 to 53272. [2022-07-21 04:43:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53272 states, 53241 states have (on average 1.5821077740838827) internal successors, (84233), 53244 states have internal predecessors, (84233), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-21 04:43:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53272 states to 53272 states and 84273 transitions. [2022-07-21 04:43:46,773 INFO L78 Accepts]: Start accepts. Automaton has 53272 states and 84273 transitions. Word has length 95 [2022-07-21 04:43:46,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:46,774 INFO L495 AbstractCegarLoop]: Abstraction has 53272 states and 84273 transitions. [2022-07-21 04:43:46,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:46,774 INFO L276 IsEmpty]: Start isEmpty. Operand 53272 states and 84273 transitions. [2022-07-21 04:43:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 04:43:46,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:46,798 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:46,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:43:46,798 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash -718621360, now seen corresponding path program 1 times [2022-07-21 04:43:46,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:46,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890288613] [2022-07-21 04:43:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:46,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:43:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:43:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:43:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:43:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:43:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 04:43:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:46,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890288613] [2022-07-21 04:43:46,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890288613] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:43:46,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697873866] [2022-07-21 04:43:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:46,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:46,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:43:47,020 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) [2022-07-21 04:43:47,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:43:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:47,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 04:43:47,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:43:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 04:43:47,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:43:47,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697873866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:47,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:43:47,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-07-21 04:43:47,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308133338] [2022-07-21 04:43:47,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:47,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:43:47,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:43:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2022-07-21 04:43:47,409 INFO L87 Difference]: Start difference. First operand 53272 states and 84273 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 04:43:49,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:49,358 INFO L93 Difference]: Finished difference Result 53602 states and 84734 transitions. [2022-07-21 04:43:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 04:43:49,359 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 96 [2022-07-21 04:43:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:49,509 INFO L225 Difference]: With dead ends: 53602 [2022-07-21 04:43:49,509 INFO L226 Difference]: Without dead ends: 53515 [2022-07-21 04:43:49,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2022-07-21 04:43:49,528 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 578 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:49,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 2405 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 04:43:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53515 states. [2022-07-21 04:43:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53515 to 53416. [2022-07-21 04:43:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53416 states, 53350 states have (on average 1.581630740393627) internal successors, (84380), 53354 states have internal predecessors, (84380), 43 states have call successors, (43), 17 states have call predecessors, (43), 22 states have return successors, (55), 44 states have call predecessors, (55), 41 states have call successors, (55) [2022-07-21 04:43:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53416 states to 53416 states and 84478 transitions. [2022-07-21 04:43:51,693 INFO L78 Accepts]: Start accepts. Automaton has 53416 states and 84478 transitions. Word has length 96 [2022-07-21 04:43:51,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:43:51,693 INFO L495 AbstractCegarLoop]: Abstraction has 53416 states and 84478 transitions. [2022-07-21 04:43:51,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 04:43:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 53416 states and 84478 transitions. [2022-07-21 04:43:51,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:43:51,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:43:51,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:43:51,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 04:43:51,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:43:51,938 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:43:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:43:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash -470836275, now seen corresponding path program 1 times [2022-07-21 04:43:51,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:43:51,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220733147] [2022-07-21 04:43:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:43:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:43:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:43:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:43:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:43:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:43:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:43:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:43:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:43:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:43:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:43:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:43:52,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:43:52,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220733147] [2022-07-21 04:43:52,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220733147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:43:52,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:43:52,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:43:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937376135] [2022-07-21 04:43:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:43:52,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:43:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:43:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:43:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:43:52,016 INFO L87 Difference]: Start difference. First operand 53416 states and 84478 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:43:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:43:56,529 INFO L93 Difference]: Finished difference Result 106319 states and 168382 transitions. [2022-07-21 04:43:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 04:43:56,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-07-21 04:43:56,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:43:56,861 INFO L225 Difference]: With dead ends: 106319 [2022-07-21 04:43:56,861 INFO L226 Difference]: Without dead ends: 106097 [2022-07-21 04:43:56,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2022-07-21 04:43:56,902 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1345 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:43:56,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 765 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 04:43:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106097 states. [2022-07-21 04:44:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106097 to 104927. [2022-07-21 04:44:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104927 states, 104786 states have (on average 1.5836180405779399) internal successors, (165941), 104795 states have internal predecessors, (165941), 95 states have call successors, (95), 32 states have call predecessors, (95), 45 states have return successors, (132), 99 states have call predecessors, (132), 91 states have call successors, (132) [2022-07-21 04:44:01,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104927 states to 104927 states and 166168 transitions. [2022-07-21 04:44:01,189 INFO L78 Accepts]: Start accepts. Automaton has 104927 states and 166168 transitions. Word has length 97 [2022-07-21 04:44:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:44:01,189 INFO L495 AbstractCegarLoop]: Abstraction has 104927 states and 166168 transitions. [2022-07-21 04:44:01,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:44:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 104927 states and 166168 transitions. [2022-07-21 04:44:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:44:01,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:44:01,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:44:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:44:01,227 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:44:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:44:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash -585870852, now seen corresponding path program 1 times [2022-07-21 04:44:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:44:01,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644084083] [2022-07-21 04:44:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:44:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:44:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:44:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:44:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:44:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:44:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:44:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:44:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:44:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:44:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:44:01,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:44:01,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644084083] [2022-07-21 04:44:01,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644084083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:44:01,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:44:01,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 04:44:01,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105403429] [2022-07-21 04:44:01,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:44:01,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 04:44:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:44:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 04:44:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:44:01,353 INFO L87 Difference]: Start difference. First operand 104927 states and 166168 transitions. Second operand has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 04:44:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:44:06,199 INFO L93 Difference]: Finished difference Result 106657 states and 168855 transitions. [2022-07-21 04:44:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 04:44:06,200 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 97 [2022-07-21 04:44:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:44:06,527 INFO L225 Difference]: With dead ends: 106657 [2022-07-21 04:44:06,527 INFO L226 Difference]: Without dead ends: 105501 [2022-07-21 04:44:06,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2022-07-21 04:44:06,565 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 794 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:44:06,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1177 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 04:44:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105501 states. [2022-07-21 04:44:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105501 to 104903. [2022-07-21 04:44:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104903 states, 104774 states have (on average 1.5836085288334891) internal successors, (165921), 104780 states have internal predecessors, (165921), 85 states have call successors, (85), 36 states have call predecessors, (85), 43 states have return successors, (108), 86 states have call predecessors, (108), 81 states have call successors, (108) [2022-07-21 04:44:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104903 states to 104903 states and 166114 transitions. [2022-07-21 04:44:10,931 INFO L78 Accepts]: Start accepts. Automaton has 104903 states and 166114 transitions. Word has length 97 [2022-07-21 04:44:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:44:10,931 INFO L495 AbstractCegarLoop]: Abstraction has 104903 states and 166114 transitions. [2022-07-21 04:44:10,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 04:44:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 104903 states and 166114 transitions. [2022-07-21 04:44:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:44:10,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:44:10,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:44:10,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:44:10,964 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:44:10,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:44:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash 911154205, now seen corresponding path program 1 times [2022-07-21 04:44:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:44:10,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350854449] [2022-07-21 04:44:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:44:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:44:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:44:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:44:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 04:44:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:44:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:44:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:44:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:44:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:44:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:44:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:44:11,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:44:11,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350854449] [2022-07-21 04:44:11,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350854449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:44:11,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:44:11,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:44:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019428154] [2022-07-21 04:44:11,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:44:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:44:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:44:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:44:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:44:11,021 INFO L87 Difference]: Start difference. First operand 104903 states and 166114 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:44:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:44:14,732 INFO L93 Difference]: Finished difference Result 105353 states and 166770 transitions. [2022-07-21 04:44:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 04:44:14,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2022-07-21 04:44:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:44:14,997 INFO L225 Difference]: With dead ends: 105353 [2022-07-21 04:44:14,998 INFO L226 Difference]: Without dead ends: 105133 [2022-07-21 04:44:15,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-21 04:44:15,031 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 388 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:44:15,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 717 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:44:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105133 states.