./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.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/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.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 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:18:57,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:18:57,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:18:57,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:18:57,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:18:57,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:18:57,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:18:57,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:18:57,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:18:57,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:18:57,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:18:57,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:18:57,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:18:57,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:18:57,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:18:57,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:18:57,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:18:57,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:18:57,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:18:57,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:18:57,947 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:18:57,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:18:57,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:18:57,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:18:57,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:18:57,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:18:57,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:18:57,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:18:57,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:18:57,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:18:57,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:18:57,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:18:57,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:18:57,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:18:57,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:18:57,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:18:57,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:18:57,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:18:57,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:18:57,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:18:57,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:18:57,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:18:57,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:18:57,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:18:57,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:18:57,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:18:57,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:18:57,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:18:57,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:18:57,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:18:57,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:18:57,997 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:18:57,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:18:57,998 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:18:57,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:18:57,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:18:57,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:18:57,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:18:57,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:18:57,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:18:57,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:18:57,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:18:57,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:18:57,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:18:57,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:18:58,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:18:58,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:18:58,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:18:58,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:18:58,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:18:58,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:18:58,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:18:58,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:18:58,001 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:18:58,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:18:58,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:18:58,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 [2022-07-21 05:18:58,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:18:58,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:18:58,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:18:58,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:18:58,273 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:18:58,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-07-21 05:18:58,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469f8f34b/d44dc80154e74e3da2e136ccaa201528/FLAG6c6110627 [2022-07-21 05:18:58,759 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:18:58,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-07-21 05:18:58,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469f8f34b/d44dc80154e74e3da2e136ccaa201528/FLAG6c6110627 [2022-07-21 05:18:58,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469f8f34b/d44dc80154e74e3da2e136ccaa201528 [2022-07-21 05:18:58,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:18:58,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:18:58,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:18:58,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:18:58,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:18:58,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:18:58" (1/1) ... [2022-07-21 05:18:58,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d728ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:58, skipping insertion in model container [2022-07-21 05:18:58,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:18:58" (1/1) ... [2022-07-21 05:18:58,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:18:58,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:18:59,071 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2022-07-21 05:18:59,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:18:59,086 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:18:59,148 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2022-07-21 05:18:59,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:18:59,159 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:18:59,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59 WrapperNode [2022-07-21 05:18:59,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:18:59,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:18:59,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:18:59,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:18:59,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,203 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 538 [2022-07-21 05:18:59,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:18:59,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:18:59,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:18:59,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:18:59,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:18:59,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:18:59,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:18:59,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:18:59,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (1/1) ... [2022-07-21 05:18:59,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:18:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:18:59,293 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 05:18:59,298 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 05:18:59,317 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-07-21 05:18:59,317 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-07-21 05:18:59,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:18:59,317 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-07-21 05:18:59,318 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-07-21 05:18:59,318 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-21 05:18:59,318 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-21 05:18:59,318 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2022-07-21 05:18:59,318 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2022-07-21 05:18:59,318 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 05:18:59,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 05:18:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:18:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-07-21 05:18:59,319 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-07-21 05:18:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:18:59,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:18:59,319 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-07-21 05:18:59,319 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-07-21 05:18:59,414 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:18:59,415 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:18:59,787 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:18:59,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:18:59,794 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 05:18:59,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:18:59 BoogieIcfgContainer [2022-07-21 05:18:59,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:18:59,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:18:59,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:18:59,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:18:59,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:18:58" (1/3) ... [2022-07-21 05:18:59,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6a658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:18:59, skipping insertion in model container [2022-07-21 05:18:59,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:18:59" (2/3) ... [2022-07-21 05:18:59,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6a658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:18:59, skipping insertion in model container [2022-07-21 05:18:59,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:18:59" (3/3) ... [2022-07-21 05:18:59,808 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2022-07-21 05:18:59,817 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:18:59,817 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:18:59,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:18:59,874 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@15eb2146, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@370c53ef [2022-07-21 05:18:59,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:18:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 167 states have (on average 1.5508982035928143) internal successors, (259), 168 states have internal predecessors, (259), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-21 05:18:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 05:18:59,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:59,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:59,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:59,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:59,889 INFO L85 PathProgramCache]: Analyzing trace with hash -518679476, now seen corresponding path program 1 times [2022-07-21 05:18:59,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:59,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784413466] [2022-07-21 05:18:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:59,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:00,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:00,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784413466] [2022-07-21 05:19:00,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784413466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:00,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:00,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 05:19:00,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860355799] [2022-07-21 05:19:00,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:00,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 05:19:00,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 05:19:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:19:00,061 INFO L87 Difference]: Start difference. First operand has 207 states, 167 states have (on average 1.5508982035928143) internal successors, (259), 168 states have internal predecessors, (259), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:00,092 INFO L93 Difference]: Finished difference Result 398 states and 642 transitions. [2022-07-21 05:19:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 05:19:00,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-21 05:19:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:00,100 INFO L225 Difference]: With dead ends: 398 [2022-07-21 05:19:00,100 INFO L226 Difference]: Without dead ends: 203 [2022-07-21 05:19:00,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:19:00,106 INFO L413 NwaCegarLoop]: 312 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, 312 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 05:19:00,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-21 05:19:00,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-07-21 05:19:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 164 states have (on average 1.5) internal successors, (246), 164 states have internal predecessors, (246), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-21 05:19:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 308 transitions. [2022-07-21 05:19:00,172 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 308 transitions. Word has length 44 [2022-07-21 05:19:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:00,173 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 308 transitions. [2022-07-21 05:19:00,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:00,173 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 308 transitions. [2022-07-21 05:19:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 05:19:00,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:00,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:00,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:19:00,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash -527444980, now seen corresponding path program 1 times [2022-07-21 05:19:00,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:00,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433365748] [2022-07-21 05:19:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:00,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:00,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:00,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433365748] [2022-07-21 05:19:00,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433365748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:00,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:00,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:19:00,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343636328] [2022-07-21 05:19:00,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:00,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:19:00,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:19:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:00,304 INFO L87 Difference]: Start difference. First operand 203 states and 308 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:00,429 INFO L93 Difference]: Finished difference Result 531 states and 811 transitions. [2022-07-21 05:19:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:19:00,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-21 05:19:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:00,438 INFO L225 Difference]: With dead ends: 531 [2022-07-21 05:19:00,439 INFO L226 Difference]: Without dead ends: 342 [2022-07-21 05:19:00,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:00,443 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 171 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:00,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1584 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-07-21 05:19:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 203. [2022-07-21 05:19:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 164 states have (on average 1.4268292682926829) internal successors, (234), 164 states have internal predecessors, (234), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-21 05:19:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 296 transitions. [2022-07-21 05:19:00,471 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 296 transitions. Word has length 44 [2022-07-21 05:19:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:00,472 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 296 transitions. [2022-07-21 05:19:00,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:00,473 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 296 transitions. [2022-07-21 05:19:00,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 05:19:00,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:00,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:00,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:19:00,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:00,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:00,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1202945359, now seen corresponding path program 1 times [2022-07-21 05:19:00,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:00,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930129778] [2022-07-21 05:19:00,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:00,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:00,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930129778] [2022-07-21 05:19:00,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930129778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:00,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:00,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745723856] [2022-07-21 05:19:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:00,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:00,656 INFO L87 Difference]: Start difference. First operand 203 states and 296 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:00,700 INFO L93 Difference]: Finished difference Result 393 states and 582 transitions. [2022-07-21 05:19:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:00,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-21 05:19:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:00,703 INFO L225 Difference]: With dead ends: 393 [2022-07-21 05:19:00,703 INFO L226 Difference]: Without dead ends: 207 [2022-07-21 05:19:00,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:00,708 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 5 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:00,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 860 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:00,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-21 05:19:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-07-21 05:19:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 167 states have (on average 1.4191616766467066) internal successors, (237), 167 states have internal predecessors, (237), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-21 05:19:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2022-07-21 05:19:00,726 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 299 transitions. Word has length 55 [2022-07-21 05:19:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:00,726 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 299 transitions. [2022-07-21 05:19:00,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 299 transitions. [2022-07-21 05:19:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 05:19:00,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:00,731 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:00,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:19:00,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash -915994749, now seen corresponding path program 1 times [2022-07-21 05:19:00,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:00,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114279369] [2022-07-21 05:19:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:00,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 05:19:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:00,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114279369] [2022-07-21 05:19:00,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114279369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:00,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:00,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:00,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600429473] [2022-07-21 05:19:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:00,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:00,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:00,850 INFO L87 Difference]: Start difference. First operand 207 states and 299 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:00,883 INFO L93 Difference]: Finished difference Result 564 states and 826 transitions. [2022-07-21 05:19:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2022-07-21 05:19:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:00,889 INFO L225 Difference]: With dead ends: 564 [2022-07-21 05:19:00,890 INFO L226 Difference]: Without dead ends: 374 [2022-07-21 05:19:00,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:00,899 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 227 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:00,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 622 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-21 05:19:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 364. [2022-07-21 05:19:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 287 states have (on average 1.4390243902439024) internal successors, (413), 288 states have internal predecessors, (413), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-07-21 05:19:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 533 transitions. [2022-07-21 05:19:00,932 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 533 transitions. Word has length 71 [2022-07-21 05:19:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:00,932 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 533 transitions. [2022-07-21 05:19:00,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 533 transitions. [2022-07-21 05:19:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 05:19:00,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:00,935 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:00,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:19:00,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1756914315, now seen corresponding path program 1 times [2022-07-21 05:19:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:00,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283377464] [2022-07-21 05:19:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 05:19:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:01,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:01,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283377464] [2022-07-21 05:19:01,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283377464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:01,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:01,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:01,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641335765] [2022-07-21 05:19:01,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:01,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:01,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:01,024 INFO L87 Difference]: Start difference. First operand 364 states and 533 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:01,058 INFO L93 Difference]: Finished difference Result 1009 states and 1492 transitions. [2022-07-21 05:19:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:01,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-07-21 05:19:01,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:01,062 INFO L225 Difference]: With dead ends: 1009 [2022-07-21 05:19:01,063 INFO L226 Difference]: Without dead ends: 662 [2022-07-21 05:19:01,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:01,064 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 235 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:01,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 657 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-07-21 05:19:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 645. [2022-07-21 05:19:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 496 states have (on average 1.4576612903225807) internal successors, (723), 499 states have internal predecessors, (723), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-07-21 05:19:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 957 transitions. [2022-07-21 05:19:01,093 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 957 transitions. Word has length 72 [2022-07-21 05:19:01,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:01,094 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 957 transitions. [2022-07-21 05:19:01,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:01,095 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 957 transitions. [2022-07-21 05:19:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 05:19:01,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:01,097 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:01,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:19:01,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 477050637, now seen corresponding path program 1 times [2022-07-21 05:19:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:01,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371763109] [2022-07-21 05:19:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:01,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 05:19:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:01,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371763109] [2022-07-21 05:19:01,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371763109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:01,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:01,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788087926] [2022-07-21 05:19:01,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:01,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:01,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:01,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:01,172 INFO L87 Difference]: Start difference. First operand 645 states and 957 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:01,437 INFO L93 Difference]: Finished difference Result 1805 states and 2723 transitions. [2022-07-21 05:19:01,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:19:01,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2022-07-21 05:19:01,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:01,444 INFO L225 Difference]: With dead ends: 1805 [2022-07-21 05:19:01,444 INFO L226 Difference]: Without dead ends: 1177 [2022-07-21 05:19:01,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:01,447 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 786 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:01,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 778 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-07-21 05:19:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 770. [2022-07-21 05:19:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 608 states have (on average 1.4358552631578947) internal successors, (873), 611 states have internal predecessors, (873), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-21 05:19:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1121 transitions. [2022-07-21 05:19:01,509 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1121 transitions. Word has length 72 [2022-07-21 05:19:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:01,509 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 1121 transitions. [2022-07-21 05:19:01,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1121 transitions. [2022-07-21 05:19:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 05:19:01,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:01,511 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:01,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:19:01,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash -221882142, now seen corresponding path program 1 times [2022-07-21 05:19:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:01,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616989240] [2022-07-21 05:19:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:01,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 05:19:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:01,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:01,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616989240] [2022-07-21 05:19:01,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616989240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:01,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:01,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:01,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444054520] [2022-07-21 05:19:01,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:01,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:01,576 INFO L87 Difference]: Start difference. First operand 770 states and 1121 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:01,829 INFO L93 Difference]: Finished difference Result 1809 states and 2723 transitions. [2022-07-21 05:19:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:19:01,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2022-07-21 05:19:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:01,836 INFO L225 Difference]: With dead ends: 1809 [2022-07-21 05:19:01,836 INFO L226 Difference]: Without dead ends: 1181 [2022-07-21 05:19:01,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:01,838 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 783 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:01,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 780 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-21 05:19:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 778. [2022-07-21 05:19:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 616 states have (on average 1.4301948051948052) internal successors, (881), 619 states have internal predecessors, (881), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-21 05:19:01,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1129 transitions. [2022-07-21 05:19:01,886 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1129 transitions. Word has length 73 [2022-07-21 05:19:01,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:01,887 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1129 transitions. [2022-07-21 05:19:01,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:01,888 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1129 transitions. [2022-07-21 05:19:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 05:19:01,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:01,889 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 05:19:01,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:19:01,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:01,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1379275244, now seen corresponding path program 1 times [2022-07-21 05:19:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:01,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304706633] [2022-07-21 05:19:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 05:19:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:01,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:01,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304706633] [2022-07-21 05:19:01,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304706633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:01,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:01,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356849151] [2022-07-21 05:19:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:01,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:01,985 INFO L87 Difference]: Start difference. First operand 778 states and 1129 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:02,193 INFO L93 Difference]: Finished difference Result 1809 states and 2715 transitions. [2022-07-21 05:19:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:02,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2022-07-21 05:19:02,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:02,211 INFO L225 Difference]: With dead ends: 1809 [2022-07-21 05:19:02,212 INFO L226 Difference]: Without dead ends: 1181 [2022-07-21 05:19:02,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:02,215 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 238 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:02,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 747 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-21 05:19:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 778. [2022-07-21 05:19:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 616 states have (on average 1.4237012987012987) internal successors, (877), 619 states have internal predecessors, (877), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-21 05:19:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1125 transitions. [2022-07-21 05:19:02,255 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1125 transitions. Word has length 75 [2022-07-21 05:19:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:02,255 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1125 transitions. [2022-07-21 05:19:02,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1125 transitions. [2022-07-21 05:19:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 05:19:02,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:02,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:02,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:19:02,257 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:02,258 INFO L85 PathProgramCache]: Analyzing trace with hash -156149797, now seen corresponding path program 1 times [2022-07-21 05:19:02,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:02,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100539563] [2022-07-21 05:19:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:02,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:02,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100539563] [2022-07-21 05:19:02,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100539563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:02,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:02,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588135627] [2022-07-21 05:19:02,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:02,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:02,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:02,335 INFO L87 Difference]: Start difference. First operand 778 states and 1125 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 05:19:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:02,396 INFO L93 Difference]: Finished difference Result 1426 states and 2092 transitions. [2022-07-21 05:19:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2022-07-21 05:19:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:02,399 INFO L225 Difference]: With dead ends: 1426 [2022-07-21 05:19:02,399 INFO L226 Difference]: Without dead ends: 798 [2022-07-21 05:19:02,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:02,402 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 6 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:02,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 872 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-07-21 05:19:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2022-07-21 05:19:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 632 states have (on average 1.4129746835443038) internal successors, (893), 635 states have internal predecessors, (893), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-21 05:19:02,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1141 transitions. [2022-07-21 05:19:02,438 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1141 transitions. Word has length 76 [2022-07-21 05:19:02,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:02,439 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1141 transitions. [2022-07-21 05:19:02,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 05:19:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1141 transitions. [2022-07-21 05:19:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 05:19:02,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:02,440 INFO L195 NwaCegarLoop]: trace histogram [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 05:19:02,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:19:02,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1992242591, now seen corresponding path program 1 times [2022-07-21 05:19:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:02,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569667356] [2022-07-21 05:19:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:02,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:02,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:02,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569667356] [2022-07-21 05:19:02,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569667356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:02,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:02,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:02,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76150120] [2022-07-21 05:19:02,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:02,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:02,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:02,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:02,502 INFO L87 Difference]: Start difference. First operand 798 states and 1141 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:02,577 INFO L93 Difference]: Finished difference Result 1466 states and 2136 transitions. [2022-07-21 05:19:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:02,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2022-07-21 05:19:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:02,580 INFO L225 Difference]: With dead ends: 1466 [2022-07-21 05:19:02,581 INFO L226 Difference]: Without dead ends: 818 [2022-07-21 05:19:02,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:02,583 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 6 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:02,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 858 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-07-21 05:19:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2022-07-21 05:19:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 648 states have (on average 1.4027777777777777) internal successors, (909), 651 states have internal predecessors, (909), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-21 05:19:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1157 transitions. [2022-07-21 05:19:02,629 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1157 transitions. Word has length 84 [2022-07-21 05:19:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:02,630 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1157 transitions. [2022-07-21 05:19:02,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1157 transitions. [2022-07-21 05:19:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 05:19:02,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:02,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:02,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:19:02,632 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash -115565173, now seen corresponding path program 1 times [2022-07-21 05:19:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:02,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176686558] [2022-07-21 05:19:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:02,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:02,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:02,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176686558] [2022-07-21 05:19:02,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176686558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:02,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:02,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:02,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582462423] [2022-07-21 05:19:02,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:02,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:02,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:02,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:02,680 INFO L87 Difference]: Start difference. First operand 818 states and 1157 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:19:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:02,746 INFO L93 Difference]: Finished difference Result 1502 states and 2152 transitions. [2022-07-21 05:19:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:02,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-21 05:19:02,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:02,749 INFO L225 Difference]: With dead ends: 1502 [2022-07-21 05:19:02,749 INFO L226 Difference]: Without dead ends: 834 [2022-07-21 05:19:02,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:02,751 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 5 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:02,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 867 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-07-21 05:19:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2022-07-21 05:19:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 660 states have (on average 1.3954545454545455) internal successors, (921), 663 states have internal predecessors, (921), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-21 05:19:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1169 transitions. [2022-07-21 05:19:02,783 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1169 transitions. Word has length 92 [2022-07-21 05:19:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:02,784 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1169 transitions. [2022-07-21 05:19:02,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:19:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1169 transitions. [2022-07-21 05:19:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 05:19:02,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:02,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:02,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:19:02,786 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2014073166, now seen corresponding path program 1 times [2022-07-21 05:19:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:02,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259872292] [2022-07-21 05:19:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:02,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:19:02,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:02,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259872292] [2022-07-21 05:19:02,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259872292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:02,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:02,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878979973] [2022-07-21 05:19:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:02,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:02,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:02,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:02,841 INFO L87 Difference]: Start difference. First operand 834 states and 1169 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:19:02,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:02,891 INFO L93 Difference]: Finished difference Result 1538 states and 2192 transitions. [2022-07-21 05:19:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:02,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2022-07-21 05:19:02,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:02,894 INFO L225 Difference]: With dead ends: 1538 [2022-07-21 05:19:02,894 INFO L226 Difference]: Without dead ends: 854 [2022-07-21 05:19:02,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:02,896 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 6 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:02,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 858 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:02,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-07-21 05:19:02,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2022-07-21 05:19:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 676 states have (on average 1.386094674556213) internal successors, (937), 679 states have internal predecessors, (937), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-21 05:19:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1185 transitions. [2022-07-21 05:19:02,938 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1185 transitions. Word has length 92 [2022-07-21 05:19:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:02,938 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1185 transitions. [2022-07-21 05:19:02,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 05:19:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1185 transitions. [2022-07-21 05:19:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 05:19:02,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:02,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:02,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:19:02,940 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:02,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash -794519374, now seen corresponding path program 1 times [2022-07-21 05:19:02,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:02,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642348014] [2022-07-21 05:19:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:19:03,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:03,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642348014] [2022-07-21 05:19:03,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642348014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:03,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:03,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:03,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860140271] [2022-07-21 05:19:03,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:03,010 INFO L87 Difference]: Start difference. First operand 854 states and 1185 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:19:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:03,059 INFO L93 Difference]: Finished difference Result 1582 states and 2220 transitions. [2022-07-21 05:19:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-07-21 05:19:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:03,063 INFO L225 Difference]: With dead ends: 1582 [2022-07-21 05:19:03,063 INFO L226 Difference]: Without dead ends: 878 [2022-07-21 05:19:03,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:03,065 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 7 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:03,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 869 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-07-21 05:19:03,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-07-21 05:19:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 696 states have (on average 1.375) internal successors, (957), 699 states have internal predecessors, (957), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-07-21 05:19:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1205 transitions. [2022-07-21 05:19:03,102 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1205 transitions. Word has length 100 [2022-07-21 05:19:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:03,103 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1205 transitions. [2022-07-21 05:19:03,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:19:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1205 transitions. [2022-07-21 05:19:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 05:19:03,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:03,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:03,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:19:03,105 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:03,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:03,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1401758325, now seen corresponding path program 1 times [2022-07-21 05:19:03,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:03,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669735490] [2022-07-21 05:19:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:03,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:19:03,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:03,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669735490] [2022-07-21 05:19:03,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669735490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:03,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:03,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985931292] [2022-07-21 05:19:03,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:03,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:03,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:03,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:03,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:03,255 INFO L87 Difference]: Start difference. First operand 878 states and 1205 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 05:19:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:03,465 INFO L93 Difference]: Finished difference Result 2499 states and 3487 transitions. [2022-07-21 05:19:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:19:03,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 103 [2022-07-21 05:19:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:03,472 INFO L225 Difference]: With dead ends: 2499 [2022-07-21 05:19:03,472 INFO L226 Difference]: Without dead ends: 1771 [2022-07-21 05:19:03,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:19:03,474 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 395 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:03,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 2312 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-07-21 05:19:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1162. [2022-07-21 05:19:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 907 states have (on average 1.3660418963616316) internal successors, (1239), 912 states have internal predecessors, (1239), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-07-21 05:19:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1583 transitions. [2022-07-21 05:19:03,558 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1583 transitions. Word has length 103 [2022-07-21 05:19:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:03,559 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1583 transitions. [2022-07-21 05:19:03,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 05:19:03,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1583 transitions. [2022-07-21 05:19:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-21 05:19:03,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:03,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:03,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:19:03,560 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1324741963, now seen corresponding path program 1 times [2022-07-21 05:19:03,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:03,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856588978] [2022-07-21 05:19:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:03,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:19:03,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:03,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856588978] [2022-07-21 05:19:03,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856588978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:03,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:03,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:03,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294633660] [2022-07-21 05:19:03,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:03,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:03,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:03,626 INFO L87 Difference]: Start difference. First operand 1162 states and 1583 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:19:03,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:03,688 INFO L93 Difference]: Finished difference Result 2130 states and 2928 transitions. [2022-07-21 05:19:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:03,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 107 [2022-07-21 05:19:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:03,692 INFO L225 Difference]: With dead ends: 2130 [2022-07-21 05:19:03,692 INFO L226 Difference]: Without dead ends: 1186 [2022-07-21 05:19:03,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:03,695 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 5 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:03,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 867 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:03,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-07-21 05:19:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2022-07-21 05:19:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 925 states have (on average 1.358918918918919) internal successors, (1257), 930 states have internal predecessors, (1257), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-07-21 05:19:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1601 transitions. [2022-07-21 05:19:03,787 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1601 transitions. Word has length 107 [2022-07-21 05:19:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:03,787 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1601 transitions. [2022-07-21 05:19:03,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:19:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1601 transitions. [2022-07-21 05:19:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 05:19:03,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:03,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:19:03,789 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash 682815691, now seen corresponding path program 1 times [2022-07-21 05:19:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176397975] [2022-07-21 05:19:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 05:19:03,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:03,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176397975] [2022-07-21 05:19:03,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176397975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:03,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:03,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:19:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351278263] [2022-07-21 05:19:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:19:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:19:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:03,854 INFO L87 Difference]: Start difference. First operand 1186 states and 1601 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:19:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:03,964 INFO L93 Difference]: Finished difference Result 1659 states and 2347 transitions. [2022-07-21 05:19:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:19:03,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 106 [2022-07-21 05:19:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:03,970 INFO L225 Difference]: With dead ends: 1659 [2022-07-21 05:19:03,971 INFO L226 Difference]: Without dead ends: 1657 [2022-07-21 05:19:03,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:03,972 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 263 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:03,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 2259 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-07-21 05:19:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1194. [2022-07-21 05:19:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 929 states have (on average 1.3573735199138859) internal successors, (1261), 936 states have internal predecessors, (1261), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2022-07-21 05:19:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1609 transitions. [2022-07-21 05:19:04,044 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1609 transitions. Word has length 106 [2022-07-21 05:19:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:04,045 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1609 transitions. [2022-07-21 05:19:04,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 05:19:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1609 transitions. [2022-07-21 05:19:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 05:19:04,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:04,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:04,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 05:19:04,046 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash -614162587, now seen corresponding path program 1 times [2022-07-21 05:19:04,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:04,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488258024] [2022-07-21 05:19:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 05:19:04,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:04,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488258024] [2022-07-21 05:19:04,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488258024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:04,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:04,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:04,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532984889] [2022-07-21 05:19:04,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:04,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:04,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:04,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:04,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:04,109 INFO L87 Difference]: Start difference. First operand 1194 states and 1609 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:19:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:04,274 INFO L93 Difference]: Finished difference Result 2456 states and 3370 transitions. [2022-07-21 05:19:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:19:04,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 109 [2022-07-21 05:19:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:04,279 INFO L225 Difference]: With dead ends: 2456 [2022-07-21 05:19:04,279 INFO L226 Difference]: Without dead ends: 1562 [2022-07-21 05:19:04,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:19:04,281 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 527 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:04,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 2275 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-21 05:19:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1240. [2022-07-21 05:19:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 986 states have (on average 1.3468559837728196) internal successors, (1328), 998 states have internal predecessors, (1328), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2022-07-21 05:19:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1652 transitions. [2022-07-21 05:19:04,378 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1652 transitions. Word has length 109 [2022-07-21 05:19:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:04,378 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1652 transitions. [2022-07-21 05:19:04,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:19:04,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1652 transitions. [2022-07-21 05:19:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 05:19:04,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:04,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:04,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 05:19:04,379 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:04,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash 326540891, now seen corresponding path program 1 times [2022-07-21 05:19:04,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:04,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951894061] [2022-07-21 05:19:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:04,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 05:19:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:04,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951894061] [2022-07-21 05:19:04,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951894061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:04,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:04,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:04,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23484532] [2022-07-21 05:19:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:04,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:04,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:04,461 INFO L87 Difference]: Start difference. First operand 1240 states and 1652 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 05:19:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:04,660 INFO L93 Difference]: Finished difference Result 2550 states and 3481 transitions. [2022-07-21 05:19:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:19:04,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2022-07-21 05:19:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:04,665 INFO L225 Difference]: With dead ends: 2550 [2022-07-21 05:19:04,665 INFO L226 Difference]: Without dead ends: 1590 [2022-07-21 05:19:04,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:19:04,667 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 399 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:04,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 2425 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2022-07-21 05:19:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1126. [2022-07-21 05:19:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 899 states have (on average 1.3481646273637375) internal successors, (1212), 909 states have internal predecessors, (1212), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2022-07-21 05:19:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1502 transitions. [2022-07-21 05:19:04,747 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1502 transitions. Word has length 111 [2022-07-21 05:19:04,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:04,747 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1502 transitions. [2022-07-21 05:19:04,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 05:19:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1502 transitions. [2022-07-21 05:19:04,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:19:04,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:04,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:04,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 05:19:04,749 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:04,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2059853897, now seen corresponding path program 1 times [2022-07-21 05:19:04,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:04,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125096496] [2022-07-21 05:19:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:04,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:19:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:19:04,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:04,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125096496] [2022-07-21 05:19:04,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125096496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:04,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:04,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 05:19:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192015523] [2022-07-21 05:19:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:04,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 05:19:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 05:19:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:04,843 INFO L87 Difference]: Start difference. First operand 1126 states and 1502 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:19:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:05,318 INFO L93 Difference]: Finished difference Result 2621 states and 3588 transitions. [2022-07-21 05:19:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:19:05,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 112 [2022-07-21 05:19:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:05,324 INFO L225 Difference]: With dead ends: 2621 [2022-07-21 05:19:05,324 INFO L226 Difference]: Without dead ends: 1695 [2022-07-21 05:19:05,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:19:05,325 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 930 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:05,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 2165 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:19:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-07-21 05:19:05,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1142. [2022-07-21 05:19:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 907 states have (on average 1.328555678059537) internal successors, (1205), 918 states have internal predecessors, (1205), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2022-07-21 05:19:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1501 transitions. [2022-07-21 05:19:05,403 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1501 transitions. Word has length 112 [2022-07-21 05:19:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:05,404 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 1501 transitions. [2022-07-21 05:19:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 05:19:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1501 transitions. [2022-07-21 05:19:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:19:05,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:05,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:05,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 05:19:05,406 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1941201166, now seen corresponding path program 1 times [2022-07-21 05:19:05,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:05,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883489534] [2022-07-21 05:19:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:19:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:05,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883489534] [2022-07-21 05:19:05,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883489534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:05,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:05,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725425014] [2022-07-21 05:19:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:05,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:05,462 INFO L87 Difference]: Start difference. First operand 1142 states and 1501 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:05,677 INFO L93 Difference]: Finished difference Result 3187 states and 4275 transitions. [2022-07-21 05:19:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:05,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2022-07-21 05:19:05,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:05,684 INFO L225 Difference]: With dead ends: 3187 [2022-07-21 05:19:05,685 INFO L226 Difference]: Without dead ends: 2296 [2022-07-21 05:19:05,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:05,687 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 440 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:05,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1227 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-07-21 05:19:05,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1939. [2022-07-21 05:19:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1514 states have (on average 1.3262879788639366) internal successors, (2008), 1533 states have internal predecessors, (2008), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2022-07-21 05:19:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2552 transitions. [2022-07-21 05:19:05,823 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2552 transitions. Word has length 112 [2022-07-21 05:19:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:05,823 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 2552 transitions. [2022-07-21 05:19:05,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2552 transitions. [2022-07-21 05:19:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 05:19:05,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:05,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:05,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 05:19:05,825 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:05,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2103041469, now seen corresponding path program 1 times [2022-07-21 05:19:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:05,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395111530] [2022-07-21 05:19:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:19:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:19:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395111530] [2022-07-21 05:19:05,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395111530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:05,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:05,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:05,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202661591] [2022-07-21 05:19:05,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:05,933 INFO L87 Difference]: Start difference. First operand 1939 states and 2552 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:06,476 INFO L93 Difference]: Finished difference Result 4400 states and 5932 transitions. [2022-07-21 05:19:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:19:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2022-07-21 05:19:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:06,486 INFO L225 Difference]: With dead ends: 4400 [2022-07-21 05:19:06,486 INFO L226 Difference]: Without dead ends: 2810 [2022-07-21 05:19:06,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:19:06,489 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 806 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:06,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 2518 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:19:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-07-21 05:19:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1958. [2022-07-21 05:19:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1520 states have (on average 1.3223684210526316) internal successors, (2010), 1540 states have internal predecessors, (2010), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2022-07-21 05:19:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2570 transitions. [2022-07-21 05:19:06,673 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2570 transitions. Word has length 114 [2022-07-21 05:19:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:06,673 INFO L495 AbstractCegarLoop]: Abstraction has 1958 states and 2570 transitions. [2022-07-21 05:19:06,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:06,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2570 transitions. [2022-07-21 05:19:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:19:06,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:06,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:06,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 05:19:06,676 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:06,677 INFO L85 PathProgramCache]: Analyzing trace with hash 985009634, now seen corresponding path program 1 times [2022-07-21 05:19:06,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:06,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355016672] [2022-07-21 05:19:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:06,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 05:19:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:06,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:06,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355016672] [2022-07-21 05:19:06,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355016672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:06,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:06,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:06,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474680512] [2022-07-21 05:19:06,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:06,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:06,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:06,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:06,731 INFO L87 Difference]: Start difference. First operand 1958 states and 2570 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:07,069 INFO L93 Difference]: Finished difference Result 5168 states and 6863 transitions. [2022-07-21 05:19:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-21 05:19:07,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:07,095 INFO L225 Difference]: With dead ends: 5168 [2022-07-21 05:19:07,095 INFO L226 Difference]: Without dead ends: 3594 [2022-07-21 05:19:07,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:07,102 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 487 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:07,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1291 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2022-07-21 05:19:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3019. [2022-07-21 05:19:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2306 states have (on average 1.318733738074588) internal successors, (3041), 2337 states have internal predecessors, (3041), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2022-07-21 05:19:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3961 transitions. [2022-07-21 05:19:07,322 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3961 transitions. Word has length 115 [2022-07-21 05:19:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:07,323 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 3961 transitions. [2022-07-21 05:19:07,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3961 transitions. [2022-07-21 05:19:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:19:07,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:07,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:07,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 05:19:07,326 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1237817774, now seen corresponding path program 1 times [2022-07-21 05:19:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:07,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988801263] [2022-07-21 05:19:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:19:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 05:19:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 05:19:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 05:19:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 05:19:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 05:19:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 05:19:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:07,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:07,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988801263] [2022-07-21 05:19:07,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988801263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:07,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:07,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126053093] [2022-07-21 05:19:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:07,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:07,373 INFO L87 Difference]: Start difference. First operand 3019 states and 3961 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:07,763 INFO L93 Difference]: Finished difference Result 7140 states and 9437 transitions. [2022-07-21 05:19:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-07-21 05:19:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:07,775 INFO L225 Difference]: With dead ends: 7140 [2022-07-21 05:19:07,776 INFO L226 Difference]: Without dead ends: 4635 [2022-07-21 05:19:07,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:07,782 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 434 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:07,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1288 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2022-07-21 05:19:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4297. [2022-07-21 05:19:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 3260 states have (on average 1.316564417177914) internal successors, (4292), 3304 states have internal predecessors, (4292), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-07-21 05:19:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 5636 transitions. [2022-07-21 05:19:08,051 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 5636 transitions. Word has length 115 [2022-07-21 05:19:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:08,051 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 5636 transitions. [2022-07-21 05:19:08,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 5636 transitions. [2022-07-21 05:19:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 05:19:08,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:08,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:08,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 05:19:08,053 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:08,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1950956728, now seen corresponding path program 1 times [2022-07-21 05:19:08,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:08,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054488364] [2022-07-21 05:19:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:08,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:08,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:08,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054488364] [2022-07-21 05:19:08,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054488364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:08,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:08,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059438327] [2022-07-21 05:19:08,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:08,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:08,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:08,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:08,100 INFO L87 Difference]: Start difference. First operand 4297 states and 5636 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:08,553 INFO L93 Difference]: Finished difference Result 9720 states and 13194 transitions. [2022-07-21 05:19:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:08,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-07-21 05:19:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:08,567 INFO L225 Difference]: With dead ends: 9720 [2022-07-21 05:19:08,567 INFO L226 Difference]: Without dead ends: 5828 [2022-07-21 05:19:08,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:08,575 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 152 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:08,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 704 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2022-07-21 05:19:08,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 4303. [2022-07-21 05:19:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4303 states, 3266 states have (on average 1.3159828536436007) internal successors, (4298), 3310 states have internal predecessors, (4298), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-07-21 05:19:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 5642 transitions. [2022-07-21 05:19:08,921 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 5642 transitions. Word has length 116 [2022-07-21 05:19:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:08,921 INFO L495 AbstractCegarLoop]: Abstraction has 4303 states and 5642 transitions. [2022-07-21 05:19:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 5642 transitions. [2022-07-21 05:19:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 05:19:08,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:08,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:08,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 05:19:08,923 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:08,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2025473139, now seen corresponding path program 1 times [2022-07-21 05:19:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:08,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551790137] [2022-07-21 05:19:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:08,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:19:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 05:19:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 05:19:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 05:19:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 05:19:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 05:19:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 05:19:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:08,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:08,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551790137] [2022-07-21 05:19:08,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551790137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:08,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:08,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:08,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015245137] [2022-07-21 05:19:08,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:08,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:08,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:08,974 INFO L87 Difference]: Start difference. First operand 4303 states and 5642 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:09,334 INFO L93 Difference]: Finished difference Result 9016 states and 12080 transitions. [2022-07-21 05:19:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:09,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 117 [2022-07-21 05:19:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:09,348 INFO L225 Difference]: With dead ends: 9016 [2022-07-21 05:19:09,349 INFO L226 Difference]: Without dead ends: 4810 [2022-07-21 05:19:09,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:09,358 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 370 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:09,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 884 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2022-07-21 05:19:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 3870. [2022-07-21 05:19:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2916 states have (on average 1.3223593964334706) internal successors, (3856), 2950 states have internal predecessors, (3856), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-07-21 05:19:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5096 transitions. [2022-07-21 05:19:09,651 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5096 transitions. Word has length 117 [2022-07-21 05:19:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:09,651 INFO L495 AbstractCegarLoop]: Abstraction has 3870 states and 5096 transitions. [2022-07-21 05:19:09,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5096 transitions. [2022-07-21 05:19:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 05:19:09,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:09,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:09,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 05:19:09,653 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 183157843, now seen corresponding path program 1 times [2022-07-21 05:19:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:09,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379772853] [2022-07-21 05:19:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:09,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:09,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:09,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379772853] [2022-07-21 05:19:09,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379772853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:09,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:09,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:09,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510919790] [2022-07-21 05:19:09,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:09,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:09,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:09,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:09,683 INFO L87 Difference]: Start difference. First operand 3870 states and 5096 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:10,069 INFO L93 Difference]: Finished difference Result 8518 states and 11512 transitions. [2022-07-21 05:19:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:10,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-21 05:19:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:10,082 INFO L225 Difference]: With dead ends: 8518 [2022-07-21 05:19:10,083 INFO L226 Difference]: Without dead ends: 4861 [2022-07-21 05:19:10,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:10,090 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 152 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:10,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 681 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2022-07-21 05:19:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 3880. [2022-07-21 05:19:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 2926 states have (on average 1.3212576896787422) internal successors, (3866), 2960 states have internal predecessors, (3866), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-07-21 05:19:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5106 transitions. [2022-07-21 05:19:10,385 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5106 transitions. Word has length 118 [2022-07-21 05:19:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:10,385 INFO L495 AbstractCegarLoop]: Abstraction has 3880 states and 5106 transitions. [2022-07-21 05:19:10,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5106 transitions. [2022-07-21 05:19:10,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 05:19:10,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:10,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:10,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 05:19:10,387 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:10,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:10,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1515793806, now seen corresponding path program 1 times [2022-07-21 05:19:10,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:10,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881782813] [2022-07-21 05:19:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:10,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 05:19:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 05:19:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 05:19:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 05:19:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 05:19:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:19:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 05:19:10,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:10,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881782813] [2022-07-21 05:19:10,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881782813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:10,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:10,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:10,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994488373] [2022-07-21 05:19:10,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:10,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:10,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:10,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:10,436 INFO L87 Difference]: Start difference. First operand 3880 states and 5106 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:10,834 INFO L93 Difference]: Finished difference Result 8465 states and 11428 transitions. [2022-07-21 05:19:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:10,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2022-07-21 05:19:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:10,846 INFO L225 Difference]: With dead ends: 8465 [2022-07-21 05:19:10,846 INFO L226 Difference]: Without dead ends: 4731 [2022-07-21 05:19:10,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:10,853 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 285 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:10,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 915 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2022-07-21 05:19:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 2927. [2022-07-21 05:19:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2207 states have (on average 1.313094698685999) internal successors, (2898), 2226 states have internal predecessors, (2898), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2022-07-21 05:19:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3836 transitions. [2022-07-21 05:19:11,156 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3836 transitions. Word has length 118 [2022-07-21 05:19:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:11,156 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 3836 transitions. [2022-07-21 05:19:11,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:11,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3836 transitions. [2022-07-21 05:19:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-21 05:19:11,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:11,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 05:19:11,161 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -402462666, now seen corresponding path program 1 times [2022-07-21 05:19:11,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:11,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532844230] [2022-07-21 05:19:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:11,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:19:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 05:19:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 05:19:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 05:19:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 05:19:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 05:19:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 05:19:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:19:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-21 05:19:11,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:11,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532844230] [2022-07-21 05:19:11,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532844230] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:11,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160941507] [2022-07-21 05:19:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:11,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:11,285 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 05:19:11,317 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 05:19:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:11,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:19:11,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 05:19:11,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 05:19:11,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160941507] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:11,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:11,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-21 05:19:11,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968593961] [2022-07-21 05:19:11,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:11,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:19:11,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:19:11,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:19:11,787 INFO L87 Difference]: Start difference. First operand 2927 states and 3836 transitions. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:14,734 INFO L93 Difference]: Finished difference Result 10002 states and 14000 transitions. [2022-07-21 05:19:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 05:19:14,734 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 186 [2022-07-21 05:19:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:14,751 INFO L225 Difference]: With dead ends: 10002 [2022-07-21 05:19:14,751 INFO L226 Difference]: Without dead ends: 7362 [2022-07-21 05:19:14,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-21 05:19:14,756 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 4481 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4481 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:14,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4481 Valid, 3286 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 05:19:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2022-07-21 05:19:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 3451. [2022-07-21 05:19:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 2624 states have (on average 1.3090701219512195) internal successors, (3435), 2644 states have internal predecessors, (3435), 531 states have call successors, (531), 295 states have call predecessors, (531), 295 states have return successors, (531), 511 states have call predecessors, (531), 531 states have call successors, (531) [2022-07-21 05:19:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 4497 transitions. [2022-07-21 05:19:15,098 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 4497 transitions. Word has length 186 [2022-07-21 05:19:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:15,098 INFO L495 AbstractCegarLoop]: Abstraction has 3451 states and 4497 transitions. [2022-07-21 05:19:15,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 13 states have internal predecessors, (264), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:15,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 4497 transitions. [2022-07-21 05:19:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-21 05:19:15,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:15,103 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:15,121 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 05:19:15,320 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,SelfDestructingSolverStorable27 [2022-07-21 05:19:15,321 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash 141381451, now seen corresponding path program 1 times [2022-07-21 05:19:15,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:15,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787677285] [2022-07-21 05:19:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:15,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 05:19:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:19:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 05:19:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 05:19:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 05:19:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:19:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:19:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-21 05:19:15,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:15,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787677285] [2022-07-21 05:19:15,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787677285] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:15,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790458308] [2022-07-21 05:19:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:15,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:15,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:15,451 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 05:19:15,452 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 05:19:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:15,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:19:15,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:19:15,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 05:19:15,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790458308] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:15,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:15,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-07-21 05:19:15,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452806209] [2022-07-21 05:19:15,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:15,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 05:19:15,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:15,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 05:19:15,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:19:15,997 INFO L87 Difference]: Start difference. First operand 3451 states and 4497 transitions. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-07-21 05:19:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:23,270 INFO L93 Difference]: Finished difference Result 17532 states and 23957 transitions. [2022-07-21 05:19:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-07-21 05:19:23,270 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 194 [2022-07-21 05:19:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:23,305 INFO L225 Difference]: With dead ends: 17532 [2022-07-21 05:19:23,305 INFO L226 Difference]: Without dead ends: 14377 [2022-07-21 05:19:23,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 476 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-07-21 05:19:23,316 INFO L413 NwaCegarLoop]: 1832 mSDtfsCounter, 5889 mSDsluCounter, 13834 mSDsCounter, 0 mSdLazyCounter, 5456 mSolverCounterSat, 3535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5889 SdHoareTripleChecker+Valid, 15666 SdHoareTripleChecker+Invalid, 8991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3535 IncrementalHoareTripleChecker+Valid, 5456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:23,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5889 Valid, 15666 Invalid, 8991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3535 Valid, 5456 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-21 05:19:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14377 states. [2022-07-21 05:19:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14377 to 6318. [2022-07-21 05:19:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 4774 states have (on average 1.3112693757855047) internal successors, (6260), 4812 states have internal predecessors, (6260), 992 states have call successors, (992), 551 states have call predecessors, (992), 551 states have return successors, (992), 954 states have call predecessors, (992), 992 states have call successors, (992) [2022-07-21 05:19:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 8244 transitions. [2022-07-21 05:19:24,064 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 8244 transitions. Word has length 194 [2022-07-21 05:19:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:24,065 INFO L495 AbstractCegarLoop]: Abstraction has 6318 states and 8244 transitions. [2022-07-21 05:19:24,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 14 states have internal predecessors, (266), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-07-21 05:19:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 8244 transitions. [2022-07-21 05:19:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-21 05:19:24,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:24,074 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:24,108 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 05:19:24,308 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,SelfDestructingSolverStorable28 [2022-07-21 05:19:24,309 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:24,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:24,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1389154626, now seen corresponding path program 1 times [2022-07-21 05:19:24,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:24,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309759460] [2022-07-21 05:19:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:24,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 05:19:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-21 05:19:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:19:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 05:19:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 05:19:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-21 05:19:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 05:19:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309759460] [2022-07-21 05:19:24,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309759460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:24,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:24,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437743613] [2022-07-21 05:19:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:24,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:24,390 INFO L87 Difference]: Start difference. First operand 6318 states and 8244 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 05:19:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,343 INFO L93 Difference]: Finished difference Result 21338 states and 28586 transitions. [2022-07-21 05:19:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 05:19:26,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 196 [2022-07-21 05:19:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,379 INFO L225 Difference]: With dead ends: 21338 [2022-07-21 05:19:26,379 INFO L226 Difference]: Without dead ends: 15378 [2022-07-21 05:19:26,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:19:26,392 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 817 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 3094 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15378 states. [2022-07-21 05:19:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15378 to 8160. [2022-07-21 05:19:27,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8160 states, 6104 states have (on average 1.3086500655307995) internal successors, (7988), 6155 states have internal predecessors, (7988), 1335 states have call successors, (1335), 720 states have call predecessors, (1335), 720 states have return successors, (1335), 1284 states have call predecessors, (1335), 1335 states have call successors, (1335) [2022-07-21 05:19:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 10658 transitions. [2022-07-21 05:19:27,333 INFO L78 Accepts]: Start accepts. Automaton has 8160 states and 10658 transitions. Word has length 196 [2022-07-21 05:19:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:27,334 INFO L495 AbstractCegarLoop]: Abstraction has 8160 states and 10658 transitions. [2022-07-21 05:19:27,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 05:19:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 8160 states and 10658 transitions. [2022-07-21 05:19:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-21 05:19:27,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:27,354 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:27,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 05:19:27,354 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:27,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1333769863, now seen corresponding path program 1 times [2022-07-21 05:19:27,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:27,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756767462] [2022-07-21 05:19:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 05:19:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 05:19:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 05:19:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 05:19:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:19:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:27,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:27,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756767462] [2022-07-21 05:19:27,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756767462] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:27,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355356775] [2022-07-21 05:19:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:27,475 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 05:19:27,476 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 05:19:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 05:19:27,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-21 05:19:27,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 05:19:27,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355356775] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:27,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:19:27,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2022-07-21 05:19:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270284896] [2022-07-21 05:19:27,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:27,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:27,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:27,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:19:27,748 INFO L87 Difference]: Start difference. First operand 8160 states and 10658 transitions. Second operand has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 05:19:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:28,275 INFO L93 Difference]: Finished difference Result 13442 states and 17611 transitions. [2022-07-21 05:19:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:28,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 198 [2022-07-21 05:19:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:28,290 INFO L225 Difference]: With dead ends: 13442 [2022-07-21 05:19:28,290 INFO L226 Difference]: Without dead ends: 5488 [2022-07-21 05:19:28,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:19:28,302 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:28,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 870 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2022-07-21 05:19:28,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 5488. [2022-07-21 05:19:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 4106 states have (on average 1.3080857282026304) internal successors, (5371), 4140 states have internal predecessors, (5371), 901 states have call successors, (901), 480 states have call predecessors, (901), 480 states have return successors, (901), 867 states have call predecessors, (901), 901 states have call successors, (901) [2022-07-21 05:19:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 7173 transitions. [2022-07-21 05:19:28,862 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 7173 transitions. Word has length 198 [2022-07-21 05:19:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:28,862 INFO L495 AbstractCegarLoop]: Abstraction has 5488 states and 7173 transitions. [2022-07-21 05:19:28,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 05:19:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 7173 transitions. [2022-07-21 05:19:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-21 05:19:28,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:28,868 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:28,897 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 05:19:29,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:29,080 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1056461284, now seen corresponding path program 1 times [2022-07-21 05:19:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:29,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173043994] [2022-07-21 05:19:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 05:19:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 05:19:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 05:19:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:19:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:29,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:29,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173043994] [2022-07-21 05:19:29,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173043994] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:29,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645518470] [2022-07-21 05:19:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:29,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:29,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:29,223 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 05:19:29,224 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 05:19:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:19:29,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:19:29,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:29,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645518470] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:29,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:29,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 24 [2022-07-21 05:19:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381547941] [2022-07-21 05:19:29,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:29,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 05:19:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:29,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 05:19:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-07-21 05:19:29,977 INFO L87 Difference]: Start difference. First operand 5488 states and 7173 transitions. Second operand has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-07-21 05:19:43,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:43,222 INFO L93 Difference]: Finished difference Result 27311 states and 38275 transitions. [2022-07-21 05:19:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-07-21 05:19:43,223 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 198 [2022-07-21 05:19:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:43,276 INFO L225 Difference]: With dead ends: 27311 [2022-07-21 05:19:43,276 INFO L226 Difference]: Without dead ends: 22107 [2022-07-21 05:19:43,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20333 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5256, Invalid=44696, Unknown=0, NotChecked=0, Total=49952 [2022-07-21 05:19:43,297 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 10125 mSDsluCounter, 8131 mSDsCounter, 0 mSdLazyCounter, 12316 mSolverCounterSat, 4950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10125 SdHoareTripleChecker+Valid, 8829 SdHoareTripleChecker+Invalid, 17266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4950 IncrementalHoareTripleChecker+Valid, 12316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:43,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10125 Valid, 8829 Invalid, 17266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4950 Valid, 12316 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-21 05:19:43,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22107 states. [2022-07-21 05:19:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22107 to 11273. [2022-07-21 05:19:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11273 states, 8504 states have (on average 1.3065616180620885) internal successors, (11111), 8570 states have internal predecessors, (11111), 1785 states have call successors, (1785), 983 states have call predecessors, (1785), 983 states have return successors, (1785), 1719 states have call predecessors, (1785), 1785 states have call successors, (1785) [2022-07-21 05:19:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11273 states to 11273 states and 14681 transitions. [2022-07-21 05:19:44,695 INFO L78 Accepts]: Start accepts. Automaton has 11273 states and 14681 transitions. Word has length 198 [2022-07-21 05:19:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:44,696 INFO L495 AbstractCegarLoop]: Abstraction has 11273 states and 14681 transitions. [2022-07-21 05:19:44,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.375) internal successors, (345), 24 states have internal predecessors, (345), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-07-21 05:19:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 11273 states and 14681 transitions. [2022-07-21 05:19:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-21 05:19:44,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:44,709 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:44,726 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 05:19:44,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:44,923 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 988856049, now seen corresponding path program 1 times [2022-07-21 05:19:44,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:44,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837820090] [2022-07-21 05:19:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:19:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 05:19:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 05:19:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 05:19:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:19:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 05:19:44,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:44,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837820090] [2022-07-21 05:19:44,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837820090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:44,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:44,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872125653] [2022-07-21 05:19:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:44,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:44,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:44,999 INFO L87 Difference]: Start difference. First operand 11273 states and 14681 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 05:19:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:46,155 INFO L93 Difference]: Finished difference Result 21529 states and 28129 transitions. [2022-07-21 05:19:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:46,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 198 [2022-07-21 05:19:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:46,179 INFO L225 Difference]: With dead ends: 21529 [2022-07-21 05:19:46,179 INFO L226 Difference]: Without dead ends: 10523 [2022-07-21 05:19:46,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:46,194 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 287 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:46,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 442 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:46,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10523 states. [2022-07-21 05:19:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10523 to 10523. [2022-07-21 05:19:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10523 states, 7946 states have (on average 1.30845708532595) internal successors, (10397), 8008 states have internal predecessors, (10397), 1663 states have call successors, (1663), 913 states have call predecessors, (1663), 913 states have return successors, (1663), 1601 states have call predecessors, (1663), 1663 states have call successors, (1663) [2022-07-21 05:19:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10523 states to 10523 states and 13723 transitions. [2022-07-21 05:19:47,350 INFO L78 Accepts]: Start accepts. Automaton has 10523 states and 13723 transitions. Word has length 198 [2022-07-21 05:19:47,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:47,350 INFO L495 AbstractCegarLoop]: Abstraction has 10523 states and 13723 transitions. [2022-07-21 05:19:47,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 05:19:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 10523 states and 13723 transitions. [2022-07-21 05:19:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-21 05:19:47,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:47,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 05:19:47,363 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:47,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:47,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2041661109, now seen corresponding path program 1 times [2022-07-21 05:19:47,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:47,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583031546] [2022-07-21 05:19:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:47,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 05:19:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 05:19:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-21 05:19:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 05:19:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:19:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:19:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-21 05:19:47,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:47,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583031546] [2022-07-21 05:19:47,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583031546] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:47,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844408736] [2022-07-21 05:19:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:47,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:47,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:47,490 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 05:19:47,491 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 05:19:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:47,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 05:19:47,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 05:19:47,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 05:19:47,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844408736] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:47,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:47,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-07-21 05:19:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660885823] [2022-07-21 05:19:47,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 05:19:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 05:19:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:19:47,832 INFO L87 Difference]: Start difference. First operand 10523 states and 13723 transitions. Second operand has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:54,257 INFO L93 Difference]: Finished difference Result 32522 states and 44939 transitions. [2022-07-21 05:19:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-21 05:19:54,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 199 [2022-07-21 05:19:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:54,304 INFO L225 Difference]: With dead ends: 32522 [2022-07-21 05:19:54,304 INFO L226 Difference]: Without dead ends: 22305 [2022-07-21 05:19:54,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=886, Invalid=5594, Unknown=0, NotChecked=0, Total=6480 [2022-07-21 05:19:54,319 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 3052 mSDsluCounter, 6315 mSDsCounter, 0 mSdLazyCounter, 5308 mSolverCounterSat, 1476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 6959 SdHoareTripleChecker+Invalid, 6784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1476 IncrementalHoareTripleChecker+Valid, 5308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:54,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 6959 Invalid, 6784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1476 Valid, 5308 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 05:19:54,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22305 states. [2022-07-21 05:19:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22305 to 11869. [2022-07-21 05:19:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11869 states, 8972 states have (on average 1.3039456085599643) internal successors, (11699), 9042 states have internal predecessors, (11699), 1863 states have call successors, (1863), 1033 states have call predecessors, (1863), 1033 states have return successors, (1863), 1793 states have call predecessors, (1863), 1863 states have call successors, (1863) [2022-07-21 05:19:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11869 states to 11869 states and 15425 transitions. [2022-07-21 05:19:55,976 INFO L78 Accepts]: Start accepts. Automaton has 11869 states and 15425 transitions. Word has length 199 [2022-07-21 05:19:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:55,976 INFO L495 AbstractCegarLoop]: Abstraction has 11869 states and 15425 transitions. [2022-07-21 05:19:55,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 16 states have internal predecessors, (259), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-07-21 05:19:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 11869 states and 15425 transitions. [2022-07-21 05:19:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-21 05:19:55,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:55,990 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:56,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 05:19:56,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-21 05:19:56,206 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1117795559, now seen corresponding path program 1 times [2022-07-21 05:19:56,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:56,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960396681] [2022-07-21 05:19:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:56,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:19:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:19:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:19:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:19:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:19:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:19:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 05:19:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:19:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 05:19:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 05:19:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 05:19:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:19:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:19:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:19:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:19:56,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960396681] [2022-07-21 05:19:56,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960396681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:56,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:56,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496146769] [2022-07-21 05:19:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:56,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:56,270 INFO L87 Difference]: Start difference. First operand 11869 states and 15425 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 05:19:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:57,639 INFO L93 Difference]: Finished difference Result 22325 states and 29122 transitions. [2022-07-21 05:19:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 207 [2022-07-21 05:19:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:57,664 INFO L225 Difference]: With dead ends: 22325 [2022-07-21 05:19:57,666 INFO L226 Difference]: Without dead ends: 10725 [2022-07-21 05:19:57,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:57,683 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 233 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:57,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 492 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:19:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10725 states. [2022-07-21 05:19:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10725 to 10693. [2022-07-21 05:19:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10693 states, 8112 states have (on average 1.3037475345167653) internal successors, (10576), 8174 states have internal predecessors, (10576), 1665 states have call successors, (1665), 915 states have call predecessors, (1665), 915 states have return successors, (1665), 1603 states have call predecessors, (1665), 1665 states have call successors, (1665) [2022-07-21 05:19:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10693 states to 10693 states and 13906 transitions. [2022-07-21 05:19:58,979 INFO L78 Accepts]: Start accepts. Automaton has 10693 states and 13906 transitions. Word has length 207 [2022-07-21 05:19:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:58,980 INFO L495 AbstractCegarLoop]: Abstraction has 10693 states and 13906 transitions. [2022-07-21 05:19:58,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 05:19:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 10693 states and 13906 transitions. [2022-07-21 05:19:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-21 05:19:58,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:58,990 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 05:19:58,991 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash 147970794, now seen corresponding path program 1 times [2022-07-21 05:19:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:58,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767002086] [2022-07-21 05:19:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:58,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:19:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:19:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:19:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:19:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:19:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:19:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:19:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:19:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:19:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 05:19:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 05:19:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 05:19:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 05:19:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:19:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:19:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:19:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-21 05:19:59,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:59,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767002086] [2022-07-21 05:19:59,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767002086] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:59,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691703407] [2022-07-21 05:19:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:59,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:59,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:59,064 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:59,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 05:19:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 05:19:59,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 8 proven. 115 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 05:19:59,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-21 05:19:59,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691703407] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:59,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:59,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-07-21 05:19:59,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643455902] [2022-07-21 05:19:59,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:59,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:19:59,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:59,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:19:59,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:19:59,518 INFO L87 Difference]: Start difference. First operand 10693 states and 13906 transitions. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 9 states have internal predecessors, (188), 4 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-21 05:20:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:02,420 INFO L93 Difference]: Finished difference Result 33530 states and 43784 transitions. [2022-07-21 05:20:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 05:20:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 9 states have internal predecessors, (188), 4 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 208 [2022-07-21 05:20:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:02,518 INFO L225 Difference]: With dead ends: 33530 [2022-07-21 05:20:02,518 INFO L226 Difference]: Without dead ends: 23272 [2022-07-21 05:20:02,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 447 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-21 05:20:02,530 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 784 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:02,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2629 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23272 states. [2022-07-21 05:20:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23272 to 16703. [2022-07-21 05:20:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16703 states, 12786 states have (on average 1.288596902862506) internal successors, (16476), 12901 states have internal predecessors, (16476), 2494 states have call successors, (2494), 1422 states have call predecessors, (2494), 1422 states have return successors, (2494), 2379 states have call predecessors, (2494), 2494 states have call successors, (2494) [2022-07-21 05:20:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16703 states to 16703 states and 21464 transitions. [2022-07-21 05:20:04,582 INFO L78 Accepts]: Start accepts. Automaton has 16703 states and 21464 transitions. Word has length 208 [2022-07-21 05:20:04,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:04,583 INFO L495 AbstractCegarLoop]: Abstraction has 16703 states and 21464 transitions. [2022-07-21 05:20:04,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 9 states have internal predecessors, (188), 4 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-21 05:20:04,583 INFO L276 IsEmpty]: Start isEmpty. Operand 16703 states and 21464 transitions. [2022-07-21 05:20:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-21 05:20:04,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:04,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:04,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:04,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:04,792 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1640642370, now seen corresponding path program 1 times [2022-07-21 05:20:04,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:04,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054328587] [2022-07-21 05:20:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:04,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 05:20:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 05:20:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 05:20:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 05:20:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 05:20:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 05:20:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-21 05:20:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:20:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:20:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:20:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 05:20:04,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:04,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054328587] [2022-07-21 05:20:04,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054328587] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:04,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621449957] [2022-07-21 05:20:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:04,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:04,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:04,880 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:04,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 05:20:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:05,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:20:05,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 05:20:05,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 05:20:05,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621449957] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:05,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:05,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-07-21 05:20:05,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660837542] [2022-07-21 05:20:05,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:05,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 05:20:05,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 05:20:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 05:20:05,261 INFO L87 Difference]: Start difference. First operand 16703 states and 21464 transitions. Second operand has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 8 states have internal predecessors, (183), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-21 05:20:08,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:08,542 INFO L93 Difference]: Finished difference Result 38927 states and 51697 transitions. [2022-07-21 05:20:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:20:08,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 8 states have internal predecessors, (183), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 208 [2022-07-21 05:20:08,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:08,588 INFO L225 Difference]: With dead ends: 38927 [2022-07-21 05:20:08,588 INFO L226 Difference]: Without dead ends: 22530 [2022-07-21 05:20:08,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:20:08,605 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 284 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:08,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 2290 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:08,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22530 states. [2022-07-21 05:20:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22530 to 16703. [2022-07-21 05:20:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16703 states, 12786 states have (on average 1.2882058501486) internal successors, (16471), 12901 states have internal predecessors, (16471), 2494 states have call successors, (2494), 1422 states have call predecessors, (2494), 1422 states have return successors, (2494), 2379 states have call predecessors, (2494), 2494 states have call successors, (2494) [2022-07-21 05:20:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16703 states to 16703 states and 21459 transitions. [2022-07-21 05:20:10,774 INFO L78 Accepts]: Start accepts. Automaton has 16703 states and 21459 transitions. Word has length 208 [2022-07-21 05:20:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:10,775 INFO L495 AbstractCegarLoop]: Abstraction has 16703 states and 21459 transitions. [2022-07-21 05:20:10,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 8 states have internal predecessors, (183), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-07-21 05:20:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 16703 states and 21459 transitions. [2022-07-21 05:20:10,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 05:20:10,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:10,784 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:10,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 05:20:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:11,000 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2029022934, now seen corresponding path program 1 times [2022-07-21 05:20:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:11,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449832725] [2022-07-21 05:20:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:11,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:20:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:20:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 05:20:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 05:20:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 05:20:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-21 05:20:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:11,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:11,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449832725] [2022-07-21 05:20:11,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449832725] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:11,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143726437] [2022-07-21 05:20:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:11,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:11,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:11,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:11,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 05:20:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:11,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 05:20:11,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:20:11,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:12,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143726437] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:12,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:12,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 10] total 22 [2022-07-21 05:20:12,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636415541] [2022-07-21 05:20:12,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:12,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 05:20:12,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:12,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 05:20:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-07-21 05:20:12,610 INFO L87 Difference]: Start difference. First operand 16703 states and 21459 transitions. Second operand has 22 states, 22 states have (on average 16.954545454545453) internal successors, (373), 22 states have internal predecessors, (373), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-21 05:20:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:18,636 INFO L93 Difference]: Finished difference Result 39985 states and 53432 transitions. [2022-07-21 05:20:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 05:20:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.954545454545453) internal successors, (373), 22 states have internal predecessors, (373), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) Word has length 215 [2022-07-21 05:20:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:18,690 INFO L225 Difference]: With dead ends: 39985 [2022-07-21 05:20:18,690 INFO L226 Difference]: Without dead ends: 26697 [2022-07-21 05:20:18,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 452 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=643, Invalid=1907, Unknown=0, NotChecked=0, Total=2550 [2022-07-21 05:20:18,706 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 3590 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:18,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3591 Valid, 3041 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 05:20:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26697 states. [2022-07-21 05:20:20,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26697 to 14070. [2022-07-21 05:20:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14070 states, 10675 states have (on average 1.2816861826697892) internal successors, (13682), 10776 states have internal predecessors, (13682), 2181 states have call successors, (2181), 1213 states have call predecessors, (2181), 1213 states have return successors, (2181), 2080 states have call predecessors, (2181), 2181 states have call successors, (2181) [2022-07-21 05:20:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14070 states to 14070 states and 18044 transitions. [2022-07-21 05:20:20,775 INFO L78 Accepts]: Start accepts. Automaton has 14070 states and 18044 transitions. Word has length 215 [2022-07-21 05:20:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:20,775 INFO L495 AbstractCegarLoop]: Abstraction has 14070 states and 18044 transitions. [2022-07-21 05:20:20,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.954545454545453) internal successors, (373), 22 states have internal predecessors, (373), 10 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-21 05:20:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 14070 states and 18044 transitions. [2022-07-21 05:20:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-21 05:20:20,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:20,783 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:20,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:21,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-21 05:20:21,002 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:21,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:21,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1439794329, now seen corresponding path program 1 times [2022-07-21 05:20:21,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:21,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722568271] [2022-07-21 05:20:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:21,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:20:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 05:20:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:20:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:20:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:20:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:20:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:21,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:21,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722568271] [2022-07-21 05:20:21,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722568271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:21,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132012482] [2022-07-21 05:20:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:21,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:21,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:21,116 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:21,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 05:20:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:21,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 05:20:21,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 80 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:20:21,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 05:20:21,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132012482] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:21,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:21,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 14 [2022-07-21 05:20:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446675689] [2022-07-21 05:20:21,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:21,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:20:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:20:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:20:21,641 INFO L87 Difference]: Start difference. First operand 14070 states and 18044 transitions. Second operand has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-21 05:20:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:28,670 INFO L93 Difference]: Finished difference Result 43858 states and 59285 transitions. [2022-07-21 05:20:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-07-21 05:20:28,671 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) Word has length 216 [2022-07-21 05:20:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:28,732 INFO L225 Difference]: With dead ends: 43858 [2022-07-21 05:20:28,732 INFO L226 Difference]: Without dead ends: 31438 [2022-07-21 05:20:28,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=5054, Unknown=0, NotChecked=0, Total=6006 [2022-07-21 05:20:28,749 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 2474 mSDsluCounter, 6173 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 7155 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:28,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2574 Valid, 7155 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 05:20:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31438 states. [2022-07-21 05:20:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31438 to 17971. [2022-07-21 05:20:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17971 states, 13831 states have (on average 1.2728653025811583) internal successors, (17605), 13950 states have internal predecessors, (17605), 2623 states have call successors, (2623), 1516 states have call predecessors, (2623), 1516 states have return successors, (2623), 2504 states have call predecessors, (2623), 2623 states have call successors, (2623) [2022-07-21 05:20:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17971 states to 17971 states and 22851 transitions. [2022-07-21 05:20:31,402 INFO L78 Accepts]: Start accepts. Automaton has 17971 states and 22851 transitions. Word has length 216 [2022-07-21 05:20:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:31,402 INFO L495 AbstractCegarLoop]: Abstraction has 17971 states and 22851 transitions. [2022-07-21 05:20:31,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.428571428571427) internal successors, (258), 14 states have internal predecessors, (258), 6 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2022-07-21 05:20:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 17971 states and 22851 transitions. [2022-07-21 05:20:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-21 05:20:31,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:31,410 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:31,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:31,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-21 05:20:31,611 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:31,611 INFO L85 PathProgramCache]: Analyzing trace with hash 71333719, now seen corresponding path program 1 times [2022-07-21 05:20:31,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:31,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341093219] [2022-07-21 05:20:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:31,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:20:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 05:20:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:20:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:20:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:20:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:20:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-21 05:20:31,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:31,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341093219] [2022-07-21 05:20:31,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341093219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:31,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:31,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:20:31,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966163394] [2022-07-21 05:20:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:31,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:20:31,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:20:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:20:31,658 INFO L87 Difference]: Start difference. First operand 17971 states and 22851 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:20:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:33,656 INFO L93 Difference]: Finished difference Result 30612 states and 39107 transitions. [2022-07-21 05:20:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:20:33,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 216 [2022-07-21 05:20:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:33,686 INFO L225 Difference]: With dead ends: 30612 [2022-07-21 05:20:33,687 INFO L226 Difference]: Without dead ends: 13650 [2022-07-21 05:20:33,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:20:33,717 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 239 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:33,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 488 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:33,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13650 states. [2022-07-21 05:20:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13650 to 13607. [2022-07-21 05:20:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13607 states, 10554 states have (on average 1.2748720864127345) internal successors, (13455), 10636 states have internal predecessors, (13455), 1931 states have call successors, (1931), 1121 states have call predecessors, (1931), 1121 states have return successors, (1931), 1849 states have call predecessors, (1931), 1931 states have call successors, (1931) [2022-07-21 05:20:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13607 states to 13607 states and 17317 transitions. [2022-07-21 05:20:35,689 INFO L78 Accepts]: Start accepts. Automaton has 13607 states and 17317 transitions. Word has length 216 [2022-07-21 05:20:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:35,689 INFO L495 AbstractCegarLoop]: Abstraction has 13607 states and 17317 transitions. [2022-07-21 05:20:35,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 05:20:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 13607 states and 17317 transitions. [2022-07-21 05:20:35,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-21 05:20:35,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:35,694 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:35,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 05:20:35,694 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1981403120, now seen corresponding path program 1 times [2022-07-21 05:20:35,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:35,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214628418] [2022-07-21 05:20:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:35,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:20:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:20:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:20:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:20:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:20:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:20:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:20:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:20:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 05:20:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:20:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 05:20:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 05:20:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:20:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:20:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:20:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 05:20:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-21 05:20:35,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:35,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214628418] [2022-07-21 05:20:35,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214628418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:35,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:35,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:20:35,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604912290] [2022-07-21 05:20:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:35,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:20:35,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:35,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:20:35,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:20:35,758 INFO L87 Difference]: Start difference. First operand 13607 states and 17317 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 05:20:40,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:40,012 INFO L93 Difference]: Finished difference Result 35344 states and 45987 transitions. [2022-07-21 05:20:40,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 05:20:40,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 217 [2022-07-21 05:20:40,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:40,067 INFO L225 Difference]: With dead ends: 35344 [2022-07-21 05:20:40,067 INFO L226 Difference]: Without dead ends: 25650 [2022-07-21 05:20:40,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:20:40,085 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 615 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:40,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 3014 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:20:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25650 states. [2022-07-21 05:20:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25650 to 16802. [2022-07-21 05:20:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16802 states, 12872 states have (on average 1.2675574891236794) internal successors, (16316), 12986 states have internal predecessors, (16316), 2488 states have call successors, (2488), 1441 states have call predecessors, (2488), 1441 states have return successors, (2488), 2374 states have call predecessors, (2488), 2488 states have call successors, (2488) [2022-07-21 05:20:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16802 states to 16802 states and 21292 transitions. [2022-07-21 05:20:42,676 INFO L78 Accepts]: Start accepts. Automaton has 16802 states and 21292 transitions. Word has length 217 [2022-07-21 05:20:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:42,676 INFO L495 AbstractCegarLoop]: Abstraction has 16802 states and 21292 transitions. [2022-07-21 05:20:42,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 05:20:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 16802 states and 21292 transitions. [2022-07-21 05:20:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-21 05:20:42,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:42,682 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:42,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 05:20:42,682 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:42,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1125932149, now seen corresponding path program 1 times [2022-07-21 05:20:42,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:42,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827683199] [2022-07-21 05:20:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:42,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:20:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:20:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:20:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:20:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:20:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:20:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:20:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:20:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 05:20:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 05:20:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 05:20:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 05:20:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:20:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:20:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 05:20:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 05:20:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-21 05:20:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827683199] [2022-07-21 05:20:42,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827683199] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374713016] [2022-07-21 05:20:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:42,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:42,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:42,809 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:42,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 05:20:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:42,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 05:20:42,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-21 05:20:43,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:20:43,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374713016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:43,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:20:43,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-21 05:20:43,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731833640] [2022-07-21 05:20:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:43,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:20:43,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:43,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:20:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:20:43,043 INFO L87 Difference]: Start difference. First operand 16802 states and 21292 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 05:20:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:46,475 INFO L93 Difference]: Finished difference Result 36219 states and 47080 transitions. [2022-07-21 05:20:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:20:46,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 218 [2022-07-21 05:20:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:46,516 INFO L225 Difference]: With dead ends: 36219 [2022-07-21 05:20:46,516 INFO L226 Difference]: Without dead ends: 20739 [2022-07-21 05:20:46,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-07-21 05:20:46,535 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 674 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:46,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 2222 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:20:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20739 states. [2022-07-21 05:20:49,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20739 to 16802. [2022-07-21 05:20:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16802 states, 12872 states have (on average 1.2608763206960845) internal successors, (16230), 12986 states have internal predecessors, (16230), 2488 states have call successors, (2488), 1441 states have call predecessors, (2488), 1441 states have return successors, (2488), 2374 states have call predecessors, (2488), 2488 states have call successors, (2488) [2022-07-21 05:20:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16802 states to 16802 states and 21206 transitions. [2022-07-21 05:20:49,126 INFO L78 Accepts]: Start accepts. Automaton has 16802 states and 21206 transitions. Word has length 218 [2022-07-21 05:20:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:49,126 INFO L495 AbstractCegarLoop]: Abstraction has 16802 states and 21206 transitions. [2022-07-21 05:20:49,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 6 states have internal predecessors, (152), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 05:20:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 16802 states and 21206 transitions. [2022-07-21 05:20:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-21 05:20:49,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:49,132 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:49,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:49,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-07-21 05:20:49,348 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:49,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1772199745, now seen corresponding path program 1 times [2022-07-21 05:20:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:49,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753191026] [2022-07-21 05:20:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:49,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:20:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 05:20:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:20:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:20:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:20:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:20:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 05:20:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:20:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753191026] [2022-07-21 05:20:49,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753191026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149979595] [2022-07-21 05:20:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:49,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:49,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:49,471 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:49,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 05:20:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:49,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:20:49,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 05:20:49,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:20:49,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149979595] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:49,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:49,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-21 05:20:49,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548707307] [2022-07-21 05:20:49,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:49,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 05:20:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 05:20:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:20:49,986 INFO L87 Difference]: Start difference. First operand 16802 states and 21206 transitions. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:20:53,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:53,615 INFO L93 Difference]: Finished difference Result 32039 states and 40782 transitions. [2022-07-21 05:20:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:20:53,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 224 [2022-07-21 05:20:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:53,653 INFO L225 Difference]: With dead ends: 32039 [2022-07-21 05:20:53,653 INFO L226 Difference]: Without dead ends: 19596 [2022-07-21 05:20:53,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 481 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:20:53,669 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1267 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:53,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 3947 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:20:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19596 states. [2022-07-21 05:20:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19596 to 16802. [2022-07-21 05:20:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16802 states, 12872 states have (on average 1.2569142324425109) internal successors, (16179), 12986 states have internal predecessors, (16179), 2488 states have call successors, (2488), 1441 states have call predecessors, (2488), 1441 states have return successors, (2488), 2374 states have call predecessors, (2488), 2488 states have call successors, (2488) [2022-07-21 05:20:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16802 states to 16802 states and 21155 transitions. [2022-07-21 05:20:56,353 INFO L78 Accepts]: Start accepts. Automaton has 16802 states and 21155 transitions. Word has length 224 [2022-07-21 05:20:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:56,354 INFO L495 AbstractCegarLoop]: Abstraction has 16802 states and 21155 transitions. [2022-07-21 05:20:56,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 11 states have internal predecessors, (232), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:20:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 16802 states and 21155 transitions. [2022-07-21 05:20:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-21 05:20:56,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:56,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:56,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:56,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-07-21 05:20:56,561 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:56,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:56,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1176450, now seen corresponding path program 1 times [2022-07-21 05:20:56,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:56,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595627580] [2022-07-21 05:20:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:56,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:20:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:20:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:20:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:20:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:20:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:20:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:20:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:20:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:20:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:20:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:20:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 05:20:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:20:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:20:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:20:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:20:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 05:20:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-21 05:20:56,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:56,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595627580] [2022-07-21 05:20:56,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595627580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:56,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:56,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:20:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808528068] [2022-07-21 05:20:56,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:56,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:20:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:20:56,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:20:56,646 INFO L87 Difference]: Start difference. First operand 16802 states and 21155 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:21:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:00,451 INFO L93 Difference]: Finished difference Result 32701 states and 42222 transitions. [2022-07-21 05:21:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:21:00,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 224 [2022-07-21 05:21:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:00,490 INFO L225 Difference]: With dead ends: 32701 [2022-07-21 05:21:00,490 INFO L226 Difference]: Without dead ends: 20749 [2022-07-21 05:21:00,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-07-21 05:21:00,504 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 702 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:00,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2612 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:21:00,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20749 states. [2022-07-21 05:21:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20749 to 16793. [2022-07-21 05:21:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16793 states, 12863 states have (on average 1.2556946280027987) internal successors, (16152), 12977 states have internal predecessors, (16152), 2488 states have call successors, (2488), 1441 states have call predecessors, (2488), 1441 states have return successors, (2488), 2374 states have call predecessors, (2488), 2488 states have call successors, (2488) [2022-07-21 05:21:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16793 states to 16793 states and 21128 transitions. [2022-07-21 05:21:03,206 INFO L78 Accepts]: Start accepts. Automaton has 16793 states and 21128 transitions. Word has length 224 [2022-07-21 05:21:03,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:03,207 INFO L495 AbstractCegarLoop]: Abstraction has 16793 states and 21128 transitions. [2022-07-21 05:21:03,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:21:03,207 INFO L276 IsEmpty]: Start isEmpty. Operand 16793 states and 21128 transitions. [2022-07-21 05:21:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-21 05:21:03,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:03,214 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:03,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 05:21:03,215 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:03,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:03,215 INFO L85 PathProgramCache]: Analyzing trace with hash 442167154, now seen corresponding path program 1 times [2022-07-21 05:21:03,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:03,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323667459] [2022-07-21 05:21:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:03,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:21:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 05:21:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:21:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 05:21:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:21:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 05:21:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 05:21:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:21:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323667459] [2022-07-21 05:21:03,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323667459] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456452928] [2022-07-21 05:21:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:03,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:03,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:03,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:03,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 05:21:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:03,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:21:03,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 110 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 05:21:03,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:03,942 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:21:03,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456452928] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:03,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:03,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2022-07-21 05:21:03,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250536837] [2022-07-21 05:21:03,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:03,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 05:21:03,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 05:21:03,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-07-21 05:21:03,943 INFO L87 Difference]: Start difference. First operand 16793 states and 21128 transitions. Second operand has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) [2022-07-21 05:21:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:14,733 INFO L93 Difference]: Finished difference Result 52225 states and 70066 transitions. [2022-07-21 05:21:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 05:21:14,733 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) Word has length 225 [2022-07-21 05:21:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:14,816 INFO L225 Difference]: With dead ends: 52225 [2022-07-21 05:21:14,816 INFO L226 Difference]: Without dead ends: 37039 [2022-07-21 05:21:14,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2022-07-21 05:21:14,836 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 3676 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 6045 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3702 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 6999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 6045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:14,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3702 Valid, 5911 Invalid, 6999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 6045 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 05:21:14,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37039 states. [2022-07-21 05:21:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37039 to 20611. [2022-07-21 05:21:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20611 states, 15696 states have (on average 1.2568170234454639) internal successors, (19727), 15839 states have internal predecessors, (19727), 3115 states have call successors, (3115), 1799 states have call predecessors, (3115), 1799 states have return successors, (3115), 2972 states have call predecessors, (3115), 3115 states have call successors, (3115) [2022-07-21 05:21:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20611 states to 20611 states and 25957 transitions. [2022-07-21 05:21:18,374 INFO L78 Accepts]: Start accepts. Automaton has 20611 states and 25957 transitions. Word has length 225 [2022-07-21 05:21:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:18,375 INFO L495 AbstractCegarLoop]: Abstraction has 20611 states and 25957 transitions. [2022-07-21 05:21:18,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.210526315789473) internal successors, (308), 19 states have internal predecessors, (308), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) [2022-07-21 05:21:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 20611 states and 25957 transitions. [2022-07-21 05:21:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 05:21:18,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:18,382 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:18,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-21 05:21:18,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-21 05:21:18,583 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:18,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1332474075, now seen corresponding path program 1 times [2022-07-21 05:21:18,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:18,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584221455] [2022-07-21 05:21:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:18,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:21:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:21:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:21:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:21:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:21:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:21:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 05:21:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:21:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 05:21:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 05:21:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 05:21:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:21:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:21:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:21:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 05:21:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 05:21:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 05:21:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-21 05:21:18,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:18,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584221455] [2022-07-21 05:21:18,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584221455] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:18,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381470761] [2022-07-21 05:21:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:18,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:18,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:18,672 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:18,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 05:21:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:18,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:21:18,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 05:21:18,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 40 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-21 05:21:19,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381470761] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:19,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:19,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-07-21 05:21:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986965229] [2022-07-21 05:21:19,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:19,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:21:19,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:21:19,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:21:19,070 INFO L87 Difference]: Start difference. First operand 20611 states and 25957 transitions. Second operand has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 13 states have internal predecessors, (284), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-21 05:21:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:29,091 INFO L93 Difference]: Finished difference Result 54867 states and 72881 transitions. [2022-07-21 05:21:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-21 05:21:29,092 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 13 states have internal predecessors, (284), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) Word has length 226 [2022-07-21 05:21:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:29,169 INFO L225 Difference]: With dead ends: 54867 [2022-07-21 05:21:29,170 INFO L226 Difference]: Without dead ends: 36131 [2022-07-21 05:21:29,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2022-07-21 05:21:29,195 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2130 mSDsluCounter, 6166 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 6930 SdHoareTripleChecker+Invalid, 4523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:29,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 6930 Invalid, 4523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:21:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36131 states. [2022-07-21 05:21:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36131 to 21055. [2022-07-21 05:21:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21055 states, 16086 states have (on average 1.2553773467611589) internal successors, (20194), 16227 states have internal predecessors, (20194), 3142 states have call successors, (3142), 1826 states have call predecessors, (3142), 1826 states have return successors, (3142), 3001 states have call predecessors, (3142), 3142 states have call successors, (3142) [2022-07-21 05:21:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21055 states to 21055 states and 26478 transitions. [2022-07-21 05:21:33,058 INFO L78 Accepts]: Start accepts. Automaton has 21055 states and 26478 transitions. Word has length 226 [2022-07-21 05:21:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:33,059 INFO L495 AbstractCegarLoop]: Abstraction has 21055 states and 26478 transitions. [2022-07-21 05:21:33,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 13 states have internal predecessors, (284), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-07-21 05:21:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 21055 states and 26478 transitions. [2022-07-21 05:21:33,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 05:21:33,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:33,067 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:33,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 05:21:33,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-07-21 05:21:33,280 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -587113781, now seen corresponding path program 1 times [2022-07-21 05:21:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:33,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864857266] [2022-07-21 05:21:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 05:21:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 05:21:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 05:21:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-21 05:21:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-21 05:21:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 05:21:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 05:21:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-21 05:21:33,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:33,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864857266] [2022-07-21 05:21:33,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864857266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:21:33,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:21:33,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:21:33,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990252549] [2022-07-21 05:21:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:21:33,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:21:33,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:33,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:21:33,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:21:33,353 INFO L87 Difference]: Start difference. First operand 21055 states and 26478 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:21:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:37,716 INFO L93 Difference]: Finished difference Result 40481 states and 51439 transitions. [2022-07-21 05:21:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:21:37,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 226 [2022-07-21 05:21:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:37,775 INFO L225 Difference]: With dead ends: 40481 [2022-07-21 05:21:37,775 INFO L226 Difference]: Without dead ends: 24788 [2022-07-21 05:21:37,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:21:37,798 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 471 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:37,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1325 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:21:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24788 states. [2022-07-21 05:21:41,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24788 to 23080. [2022-07-21 05:21:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23080 states, 17609 states have (on average 1.2496450678630247) internal successors, (22005), 17762 states have internal predecessors, (22005), 3464 states have call successors, (3464), 2006 states have call predecessors, (3464), 2006 states have return successors, (3464), 3311 states have call predecessors, (3464), 3464 states have call successors, (3464) [2022-07-21 05:21:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23080 states to 23080 states and 28933 transitions. [2022-07-21 05:21:41,926 INFO L78 Accepts]: Start accepts. Automaton has 23080 states and 28933 transitions. Word has length 226 [2022-07-21 05:21:41,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:41,927 INFO L495 AbstractCegarLoop]: Abstraction has 23080 states and 28933 transitions. [2022-07-21 05:21:41,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:21:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 23080 states and 28933 transitions. [2022-07-21 05:21:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-21 05:21:41,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:41,935 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:41,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 05:21:41,935 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash 876277694, now seen corresponding path program 1 times [2022-07-21 05:21:41,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:41,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782033750] [2022-07-21 05:21:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:41,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 05:21:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-21 05:21:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 05:21:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 05:21:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 05:21:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 05:21:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 05:21:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:21:42,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782033750] [2022-07-21 05:21:42,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782033750] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430852801] [2022-07-21 05:21:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:42,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:42,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:42,200 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:42,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 05:21:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:42,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 05:21:42,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 91 proven. 23 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 05:21:42,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-21 05:21:43,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430852801] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:43,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:43,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 8] total 21 [2022-07-21 05:21:43,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052205251] [2022-07-21 05:21:43,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:43,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 05:21:43,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 05:21:43,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-07-21 05:21:43,103 INFO L87 Difference]: Start difference. First operand 23080 states and 28933 transitions. Second operand has 21 states, 21 states have (on average 18.19047619047619) internal successors, (382), 21 states have internal predecessors, (382), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2022-07-21 05:21:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:52,134 INFO L93 Difference]: Finished difference Result 48569 states and 62577 transitions. [2022-07-21 05:21:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 05:21:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 18.19047619047619) internal successors, (382), 21 states have internal predecessors, (382), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) Word has length 227 [2022-07-21 05:21:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:52,202 INFO L225 Difference]: With dead ends: 48569 [2022-07-21 05:21:52,202 INFO L226 Difference]: Without dead ends: 29119 [2022-07-21 05:21:52,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 480 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=765, Invalid=2427, Unknown=0, NotChecked=0, Total=3192 [2022-07-21 05:21:52,225 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 5571 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 3347 mSolverCounterSat, 2420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2420 IncrementalHoareTripleChecker+Valid, 3347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:52,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 3489 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2420 Valid, 3347 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 05:21:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29119 states. [2022-07-21 05:21:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29119 to 22573. [2022-07-21 05:21:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22573 states, 17227 states have (on average 1.2487954954431997) internal successors, (21513), 17375 states have internal predecessors, (21513), 3387 states have call successors, (3387), 1958 states have call predecessors, (3387), 1958 states have return successors, (3387), 3239 states have call predecessors, (3387), 3387 states have call successors, (3387) [2022-07-21 05:21:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22573 states to 22573 states and 28287 transitions. [2022-07-21 05:21:56,470 INFO L78 Accepts]: Start accepts. Automaton has 22573 states and 28287 transitions. Word has length 227 [2022-07-21 05:21:56,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:56,470 INFO L495 AbstractCegarLoop]: Abstraction has 22573 states and 28287 transitions. [2022-07-21 05:21:56,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.19047619047619) internal successors, (382), 21 states have internal predecessors, (382), 10 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2022-07-21 05:21:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 22573 states and 28287 transitions. [2022-07-21 05:21:56,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-21 05:21:56,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:56,478 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:56,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 05:21:56,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:56,678 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash 386660913, now seen corresponding path program 1 times [2022-07-21 05:21:56,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:56,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894245361] [2022-07-21 05:21:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:56,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:21:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:21:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:21:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:21:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:21:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:21:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:21:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:21:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:21:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:21:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:21:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:21:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 05:21:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 05:21:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 05:21:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 05:21:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:21:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 05:21:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:21:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-21 05:21:56,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:56,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894245361] [2022-07-21 05:21:56,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894245361] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:56,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942812697] [2022-07-21 05:21:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:56,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:56,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:56,796 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:56,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 05:21:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:56,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:21:56,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 46 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 05:21:57,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-21 05:21:57,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942812697] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:57,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:57,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-07-21 05:21:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010013595] [2022-07-21 05:21:57,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:57,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 05:21:57,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 05:21:57,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:21:57,321 INFO L87 Difference]: Start difference. First operand 22573 states and 28287 transitions. Second operand has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 15 states have internal predecessors, (304), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-07-21 05:22:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:22:10,008 INFO L93 Difference]: Finished difference Result 60216 states and 77246 transitions. [2022-07-21 05:22:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-07-21 05:22:10,009 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 15 states have internal predecessors, (304), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 232 [2022-07-21 05:22:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:22:10,097 INFO L225 Difference]: With dead ends: 60216 [2022-07-21 05:22:10,097 INFO L226 Difference]: Without dead ends: 42517 [2022-07-21 05:22:10,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 530 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-07-21 05:22:10,122 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 4670 mSDsluCounter, 9571 mSDsCounter, 0 mSdLazyCounter, 3244 mSolverCounterSat, 2243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 10730 SdHoareTripleChecker+Invalid, 5487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2243 IncrementalHoareTripleChecker+Valid, 3244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:22:10,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 10730 Invalid, 5487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2243 Valid, 3244 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 05:22:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42517 states. [2022-07-21 05:22:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42517 to 24878. [2022-07-21 05:22:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24878 states, 18933 states have (on average 1.2412718533777003) internal successors, (23501), 19101 states have internal predecessors, (23501), 3687 states have call successors, (3687), 2257 states have call predecessors, (3687), 2257 states have return successors, (3687), 3519 states have call predecessors, (3687), 3687 states have call successors, (3687) [2022-07-21 05:22:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24878 states to 24878 states and 30875 transitions. [2022-07-21 05:22:15,241 INFO L78 Accepts]: Start accepts. Automaton has 24878 states and 30875 transitions. Word has length 232 [2022-07-21 05:22:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:22:15,241 INFO L495 AbstractCegarLoop]: Abstraction has 24878 states and 30875 transitions. [2022-07-21 05:22:15,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.88235294117647) internal successors, (304), 15 states have internal predecessors, (304), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-07-21 05:22:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 24878 states and 30875 transitions. [2022-07-21 05:22:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 05:22:15,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:22:15,250 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:22:15,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 05:22:15,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-21 05:22:15,452 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:22:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:22:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -377182332, now seen corresponding path program 1 times [2022-07-21 05:22:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:22:15,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272206874] [2022-07-21 05:22:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:15,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:22:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:22:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:22:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:22:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:22:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:22:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:22:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:22:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:22:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:22:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:22:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:22:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 05:22:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:22:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:22:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:22:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-21 05:22:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-21 05:22:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 05:22:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-21 05:22:15,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:22:15,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272206874] [2022-07-21 05:22:15,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272206874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:22:15,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:22:15,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:22:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269177599] [2022-07-21 05:22:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:22:15,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:22:15,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:22:15,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:22:15,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:22:15,500 INFO L87 Difference]: Start difference. First operand 24878 states and 30875 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:22:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:22:22,135 INFO L93 Difference]: Finished difference Result 51811 states and 65654 transitions. [2022-07-21 05:22:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:22:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 231 [2022-07-21 05:22:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:22:22,191 INFO L225 Difference]: With dead ends: 51811 [2022-07-21 05:22:22,191 INFO L226 Difference]: Without dead ends: 29709 [2022-07-21 05:22:22,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:22:22,214 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 431 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:22:22,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1074 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:22:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29709 states. [2022-07-21 05:22:27,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29709 to 24866. [2022-07-21 05:22:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24866 states, 18921 states have (on average 1.2401564399344644) internal successors, (23465), 19089 states have internal predecessors, (23465), 3687 states have call successors, (3687), 2257 states have call predecessors, (3687), 2257 states have return successors, (3687), 3519 states have call predecessors, (3687), 3687 states have call successors, (3687) [2022-07-21 05:22:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24866 states to 24866 states and 30839 transitions. [2022-07-21 05:22:27,188 INFO L78 Accepts]: Start accepts. Automaton has 24866 states and 30839 transitions. Word has length 231 [2022-07-21 05:22:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:22:27,188 INFO L495 AbstractCegarLoop]: Abstraction has 24866 states and 30839 transitions. [2022-07-21 05:22:27,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:22:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 24866 states and 30839 transitions. [2022-07-21 05:22:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 05:22:27,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:22:27,197 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:22:27,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-21 05:22:27,197 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:22:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:22:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1767162910, now seen corresponding path program 1 times [2022-07-21 05:22:27,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:22:27,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100746397] [2022-07-21 05:22:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:22:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:22:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:22:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 05:22:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 05:22:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:22:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 05:22:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 05:22:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 05:22:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 05:22:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 05:22:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 05:22:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 05:22:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 05:22:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:22:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:22:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-21 05:22:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-21 05:22:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 05:22:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 05:22:27,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:22:27,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100746397] [2022-07-21 05:22:27,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100746397] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:22:27,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411407494] [2022-07-21 05:22:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:27,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:22:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:22:27,302 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:22:27,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 05:22:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:27,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:22:27,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:22:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 51 proven. 67 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 05:22:27,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:22:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 05:22:27,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411407494] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:22:27,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:22:27,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-07-21 05:22:27,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489637547] [2022-07-21 05:22:27,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:22:27,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 05:22:27,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:22:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 05:22:27,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:22:27,858 INFO L87 Difference]: Start difference. First operand 24866 states and 30839 transitions. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 11 states have internal predecessors, (238), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:22:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:22:36,321 INFO L93 Difference]: Finished difference Result 51409 states and 66147 transitions. [2022-07-21 05:22:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:22:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 11 states have internal predecessors, (238), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 231 [2022-07-21 05:22:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:22:36,386 INFO L225 Difference]: With dead ends: 51409 [2022-07-21 05:22:36,386 INFO L226 Difference]: Without dead ends: 32571 [2022-07-21 05:22:36,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 497 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-07-21 05:22:36,408 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 1087 mSDsluCounter, 5088 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 6135 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:22:36,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 6135 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:22:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32571 states. [2022-07-21 05:22:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32571 to 20520. [2022-07-21 05:22:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20520 states, 15641 states have (on average 1.2402020331180872) internal successors, (19398), 15781 states have internal predecessors, (19398), 3008 states have call successors, (3008), 1870 states have call predecessors, (3008), 1870 states have return successors, (3008), 2868 states have call predecessors, (3008), 3008 states have call successors, (3008) [2022-07-21 05:22:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20520 states to 20520 states and 25414 transitions. [2022-07-21 05:22:41,047 INFO L78 Accepts]: Start accepts. Automaton has 20520 states and 25414 transitions. Word has length 231 [2022-07-21 05:22:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:22:41,047 INFO L495 AbstractCegarLoop]: Abstraction has 20520 states and 25414 transitions. [2022-07-21 05:22:41,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 11 states have internal predecessors, (238), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-21 05:22:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 20520 states and 25414 transitions. [2022-07-21 05:22:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-21 05:22:41,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:22:41,056 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:22:41,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 05:22:41,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:22:41,257 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:22:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:22:41,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1662847136, now seen corresponding path program 1 times [2022-07-21 05:22:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:22:41,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490129968] [2022-07-21 05:22:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:41,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:22:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:22:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 05:22:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 05:22:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 05:22:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 05:22:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 05:22:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:22:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 05:22:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 05:22:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:22:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 05:22:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 05:22:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 05:22:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-21 05:22:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 05:22:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 05:22:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 05:22:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 05:22:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-21 05:22:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 05:22:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-21 05:22:41,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:22:41,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490129968] [2022-07-21 05:22:41,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490129968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:22:41,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241487384] [2022-07-21 05:22:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:41,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:22:41,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:22:41,398 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:22:41,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 05:22:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:41,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 05:22:41,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:22:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 115 proven. 27 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 05:22:42,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:22:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 31 proven. 22 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-21 05:22:42,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241487384] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:22:42,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:22:42,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-07-21 05:22:42,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871986688] [2022-07-21 05:22:42,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:22:42,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 05:22:42,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:22:42,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 05:22:42,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-07-21 05:22:42,513 INFO L87 Difference]: Start difference. First operand 20520 states and 25414 transitions. Second operand has 25 states, 25 states have (on average 15.52) internal successors, (388), 25 states have internal predecessors, (388), 9 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54)