./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0217_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ae007674 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0217_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:52:42,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:52:42,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:52:42,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:52:42,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:52:42,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:52:42,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:52:42,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:52:42,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:52:42,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:52:42,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:52:42,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:52:42,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:52:42,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:52:42,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:52:42,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:52:42,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:52:42,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:52:42,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:52:42,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:52:42,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:52:42,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:52:42,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:52:42,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:52:42,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:52:42,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:52:42,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:52:42,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:52:42,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:52:42,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:52:42,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:52:42,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:52:42,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:52:42,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:52:42,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:52:42,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:52:42,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:52:42,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:52:42,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:52:42,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:52:42,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:52:42,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-28 05:52:42,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:52:42,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:52:42,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:52:42,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:52:42,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:52:42,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:52:42,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:52:42,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:52:42,961 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:52:42,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:52:42,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 05:52:42,963 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 05:52:42,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:52:42,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 05:52:42,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:52:42,963 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 05:52:42,963 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 05:52:42,964 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 05:52:42,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:52:42,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 05:52:42,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 05:52:42,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:52:42,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:52:42,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:52:42,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:52:42,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:52:42,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:52:42,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:52:42,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 05:52:42,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 05:52:42,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a [2021-12-28 05:52:43,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:52:43,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:52:43,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:52:43,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:52:43,277 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:52:43,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0217_1.i [2021-12-28 05:52:43,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab4794c8/7452fbdaa4ca4925a70db2295245f5a3/FLAG5a3ced5d9 [2021-12-28 05:52:43,832 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:52:43,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0217_1.i [2021-12-28 05:52:43,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab4794c8/7452fbdaa4ca4925a70db2295245f5a3/FLAG5a3ced5d9 [2021-12-28 05:52:44,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab4794c8/7452fbdaa4ca4925a70db2295245f5a3 [2021-12-28 05:52:44,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:52:44,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:52:44,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:52:44,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:52:44,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:52:44,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4283828a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44, skipping insertion in model container [2021-12-28 05:52:44,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:52:44,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:52:44,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:52:44,508 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 05:52:44,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:52:44,587 INFO L208 MainTranslator]: Completed translation [2021-12-28 05:52:44,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44 WrapperNode [2021-12-28 05:52:44,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:52:44,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 05:52:44,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 05:52:44,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 05:52:44,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,641 INFO L137 Inliner]: procedures = 181, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 257 [2021-12-28 05:52:44,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 05:52:44,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 05:52:44,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 05:52:44,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 05:52:44,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 05:52:44,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 05:52:44,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 05:52:44,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 05:52:44,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (1/1) ... [2021-12-28 05:52:44,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:52:44,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:52:44,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 05:52:44,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 05:52:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2021-12-28 05:52:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2021-12-28 05:52:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 05:52:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 05:52:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 05:52:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 05:52:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 05:52:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 05:52:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 05:52:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 05:52:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 05:52:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 05:52:44,861 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 05:52:44,862 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 05:52:45,321 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 05:52:45,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 05:52:45,329 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-28 05:52:45,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:52:45 BoogieIcfgContainer [2021-12-28 05:52:45,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 05:52:45,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 05:52:45,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 05:52:45,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 05:52:45,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:52:44" (1/3) ... [2021-12-28 05:52:45,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53db0c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:52:45, skipping insertion in model container [2021-12-28 05:52:45,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:44" (2/3) ... [2021-12-28 05:52:45,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53db0c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:52:45, skipping insertion in model container [2021-12-28 05:52:45,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:52:45" (3/3) ... [2021-12-28 05:52:45,337 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0217_1.i [2021-12-28 05:52:45,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 05:52:45,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-12-28 05:52:45,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 05:52:45,381 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 05:52:45,381 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-12-28 05:52:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 170 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:52:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-28 05:52:45,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:45,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-28 05:52:45,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:45,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1046105098, now seen corresponding path program 1 times [2021-12-28 05:52:45,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:45,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804118531] [2021-12-28 05:52:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:45,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:45,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:45,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804118531] [2021-12-28 05:52:45,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804118531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:45,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:45,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:45,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546156914] [2021-12-28 05:52:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:45,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 05:52:45,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 05:52:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 05:52:45,594 INFO L87 Difference]: Start difference. First operand has 174 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 170 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:45,627 INFO L93 Difference]: Finished difference Result 174 states and 198 transitions. [2021-12-28 05:52:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 05:52:45,630 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-28 05:52:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:45,640 INFO L225 Difference]: With dead ends: 174 [2021-12-28 05:52:45,640 INFO L226 Difference]: Without dead ends: 172 [2021-12-28 05:52:45,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 05:52:45,645 INFO L933 BasicCegarLoop]: 198 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, 198 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:45,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-28 05:52:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-12-28 05:52:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 102 states have (on average 1.8823529411764706) internal successors, (192), 168 states have internal predecessors, (192), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:52:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 196 transitions. [2021-12-28 05:52:45,706 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 196 transitions. Word has length 6 [2021-12-28 05:52:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:45,706 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 196 transitions. [2021-12-28 05:52:45,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 196 transitions. [2021-12-28 05:52:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-28 05:52:45,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:45,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:45,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 05:52:45,708 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash 594388414, now seen corresponding path program 1 times [2021-12-28 05:52:45,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:45,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077676587] [2021-12-28 05:52:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:45,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:45,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:45,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077676587] [2021-12-28 05:52:45,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077676587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:45,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:45,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:45,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390041337] [2021-12-28 05:52:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:45,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:45,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:45,791 INFO L87 Difference]: Start difference. First operand 172 states and 196 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:45,862 INFO L93 Difference]: Finished difference Result 339 states and 387 transitions. [2021-12-28 05:52:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-28 05:52:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:45,866 INFO L225 Difference]: With dead ends: 339 [2021-12-28 05:52:45,866 INFO L226 Difference]: Without dead ends: 339 [2021-12-28 05:52:45,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:45,871 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 185 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:45,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 727 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-12-28 05:52:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 174. [2021-12-28 05:52:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 104 states have (on average 1.8653846153846154) internal successors, (194), 170 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:52:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2021-12-28 05:52:45,886 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 8 [2021-12-28 05:52:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:45,886 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2021-12-28 05:52:45,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2021-12-28 05:52:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-28 05:52:45,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:45,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:45,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 05:52:45,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:45,890 INFO L85 PathProgramCache]: Analyzing trace with hash 592541372, now seen corresponding path program 1 times [2021-12-28 05:52:45,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:45,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101875023] [2021-12-28 05:52:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:45,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:45,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101875023] [2021-12-28 05:52:45,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101875023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:45,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:45,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-28 05:52:45,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568970453] [2021-12-28 05:52:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:45,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:45,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:45,971 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:46,139 INFO L93 Difference]: Finished difference Result 337 states and 384 transitions. [2021-12-28 05:52:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:46,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-28 05:52:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:46,142 INFO L225 Difference]: With dead ends: 337 [2021-12-28 05:52:46,142 INFO L226 Difference]: Without dead ends: 337 [2021-12-28 05:52:46,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:46,144 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 176 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:46,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 261 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-28 05:52:46,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 241. [2021-12-28 05:52:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.8571428571428572) internal successors, (312), 234 states have internal predecessors, (312), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:52:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2021-12-28 05:52:46,165 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 8 [2021-12-28 05:52:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:46,166 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2021-12-28 05:52:46,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2021-12-28 05:52:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-28 05:52:46,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:46,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:46,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 05:52:46,167 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:46,169 INFO L85 PathProgramCache]: Analyzing trace with hash 592541373, now seen corresponding path program 1 times [2021-12-28 05:52:46,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:46,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531221209] [2021-12-28 05:52:46,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:46,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:46,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:46,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531221209] [2021-12-28 05:52:46,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531221209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:46,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:46,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:46,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948571891] [2021-12-28 05:52:46,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:46,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:46,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:46,286 INFO L87 Difference]: Start difference. First operand 241 states and 320 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:46,443 INFO L93 Difference]: Finished difference Result 392 states and 502 transitions. [2021-12-28 05:52:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:46,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-28 05:52:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:46,446 INFO L225 Difference]: With dead ends: 392 [2021-12-28 05:52:46,446 INFO L226 Difference]: Without dead ends: 392 [2021-12-28 05:52:46,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:46,447 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 147 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:46,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 440 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:46,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-28 05:52:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 326. [2021-12-28 05:52:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 247 states have (on average 1.8178137651821862) internal successors, (449), 315 states have internal predecessors, (449), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 465 transitions. [2021-12-28 05:52:46,460 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 465 transitions. Word has length 8 [2021-12-28 05:52:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:46,460 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 465 transitions. [2021-12-28 05:52:46,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 465 transitions. [2021-12-28 05:52:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-28 05:52:46,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:46,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:46,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 05:52:46,462 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 592541435, now seen corresponding path program 1 times [2021-12-28 05:52:46,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:46,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981862688] [2021-12-28 05:52:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:46,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:46,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981862688] [2021-12-28 05:52:46,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981862688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:46,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:46,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:46,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922418104] [2021-12-28 05:52:46,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:46,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:46,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:46,550 INFO L87 Difference]: Start difference. First operand 326 states and 465 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:46,733 INFO L93 Difference]: Finished difference Result 391 states and 500 transitions. [2021-12-28 05:52:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:46,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-28 05:52:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:46,736 INFO L225 Difference]: With dead ends: 391 [2021-12-28 05:52:46,736 INFO L226 Difference]: Without dead ends: 391 [2021-12-28 05:52:46,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:46,737 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 129 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:46,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 454 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-28 05:52:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 326. [2021-12-28 05:52:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 247 states have (on average 1.8178137651821862) internal successors, (449), 315 states have internal predecessors, (449), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 465 transitions. [2021-12-28 05:52:46,747 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 465 transitions. Word has length 8 [2021-12-28 05:52:46,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:46,747 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 465 transitions. [2021-12-28 05:52:46,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 465 transitions. [2021-12-28 05:52:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 05:52:46,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:46,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:46,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 05:52:46,749 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:46,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:46,749 INFO L85 PathProgramCache]: Analyzing trace with hash 84699063, now seen corresponding path program 1 times [2021-12-28 05:52:46,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:46,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054248578] [2021-12-28 05:52:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:46,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:46,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:46,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054248578] [2021-12-28 05:52:46,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054248578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:46,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:46,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:52:46,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520948388] [2021-12-28 05:52:46,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:46,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:46,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:46,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:46,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:46,776 INFO L87 Difference]: Start difference. First operand 326 states and 465 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:46,789 INFO L93 Difference]: Finished difference Result 467 states and 621 transitions. [2021-12-28 05:52:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:46,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-28 05:52:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:46,791 INFO L225 Difference]: With dead ends: 467 [2021-12-28 05:52:46,791 INFO L226 Difference]: Without dead ends: 467 [2021-12-28 05:52:46,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:46,792 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 167 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:46,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 384 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-12-28 05:52:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 328. [2021-12-28 05:52:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 249 states have (on average 1.8032128514056225) internal successors, (449), 317 states have internal predecessors, (449), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 465 transitions. [2021-12-28 05:52:46,801 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 465 transitions. Word has length 11 [2021-12-28 05:52:46,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:46,801 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 465 transitions. [2021-12-28 05:52:46,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 465 transitions. [2021-12-28 05:52:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-28 05:52:46,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:46,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:46,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 05:52:46,802 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:46,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1669297564, now seen corresponding path program 1 times [2021-12-28 05:52:46,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:46,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354666045] [2021-12-28 05:52:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:46,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:46,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:46,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354666045] [2021-12-28 05:52:46,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354666045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:46,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:46,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:46,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508458145] [2021-12-28 05:52:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:46,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:46,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:46,840 INFO L87 Difference]: Start difference. First operand 328 states and 465 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:46,953 INFO L93 Difference]: Finished difference Result 383 states and 518 transitions. [2021-12-28 05:52:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:46,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-28 05:52:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:46,956 INFO L225 Difference]: With dead ends: 383 [2021-12-28 05:52:46,957 INFO L226 Difference]: Without dead ends: 376 [2021-12-28 05:52:46,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:46,961 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 77 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:46,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 299 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-28 05:52:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 325. [2021-12-28 05:52:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 246 states have (on average 1.8048780487804879) internal successors, (444), 314 states have internal predecessors, (444), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 460 transitions. [2021-12-28 05:52:46,971 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 460 transitions. Word has length 12 [2021-12-28 05:52:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:46,972 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 460 transitions. [2021-12-28 05:52:46,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 460 transitions. [2021-12-28 05:52:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:52:46,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:46,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:46,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 05:52:46,974 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:46,975 INFO L85 PathProgramCache]: Analyzing trace with hash 79488163, now seen corresponding path program 1 times [2021-12-28 05:52:46,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:46,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445591164] [2021-12-28 05:52:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:46,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:47,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:47,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445591164] [2021-12-28 05:52:47,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445591164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:47,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:47,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:47,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885334139] [2021-12-28 05:52:47,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:47,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:47,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:47,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:47,028 INFO L87 Difference]: Start difference. First operand 325 states and 460 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:47,048 INFO L93 Difference]: Finished difference Result 527 states and 732 transitions. [2021-12-28 05:52:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:47,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-28 05:52:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:47,051 INFO L225 Difference]: With dead ends: 527 [2021-12-28 05:52:47,051 INFO L226 Difference]: Without dead ends: 527 [2021-12-28 05:52:47,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:47,052 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 181 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:47,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 552 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-12-28 05:52:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 329. [2021-12-28 05:52:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 250 states have (on average 1.784) internal successors, (446), 318 states have internal predecessors, (446), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 462 transitions. [2021-12-28 05:52:47,062 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 462 transitions. Word has length 17 [2021-12-28 05:52:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:47,062 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 462 transitions. [2021-12-28 05:52:47,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 462 transitions. [2021-12-28 05:52:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:52:47,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:47,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:47,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 05:52:47,064 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash -621576415, now seen corresponding path program 1 times [2021-12-28 05:52:47,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:47,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951124975] [2021-12-28 05:52:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:47,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:47,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:47,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951124975] [2021-12-28 05:52:47,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951124975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:47,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:47,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:52:47,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522707791] [2021-12-28 05:52:47,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:47,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:47,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:47,088 INFO L87 Difference]: Start difference. First operand 329 states and 462 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:47,096 INFO L93 Difference]: Finished difference Result 333 states and 466 transitions. [2021-12-28 05:52:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:47,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-28 05:52:47,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:47,098 INFO L225 Difference]: With dead ends: 333 [2021-12-28 05:52:47,098 INFO L226 Difference]: Without dead ends: 333 [2021-12-28 05:52:47,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:47,100 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:47,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:47,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-28 05:52:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-28 05:52:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 254 states have (on average 1.7716535433070866) internal successors, (450), 322 states have internal predecessors, (450), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 466 transitions. [2021-12-28 05:52:47,109 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 466 transitions. Word has length 17 [2021-12-28 05:52:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:47,110 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 466 transitions. [2021-12-28 05:52:47,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:47,110 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 466 transitions. [2021-12-28 05:52:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:52:47,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:47,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:47,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 05:52:47,112 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:47,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash 187770211, now seen corresponding path program 1 times [2021-12-28 05:52:47,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:47,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674171331] [2021-12-28 05:52:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:47,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:47,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:47,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674171331] [2021-12-28 05:52:47,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674171331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:47,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:47,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:52:47,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106955001] [2021-12-28 05:52:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:47,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:47,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:47,165 INFO L87 Difference]: Start difference. First operand 333 states and 466 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:47,440 INFO L93 Difference]: Finished difference Result 566 states and 714 transitions. [2021-12-28 05:52:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:47,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-28 05:52:47,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:47,443 INFO L225 Difference]: With dead ends: 566 [2021-12-28 05:52:47,443 INFO L226 Difference]: Without dead ends: 566 [2021-12-28 05:52:47,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:47,444 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 340 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:47,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 458 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-12-28 05:52:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 339. [2021-12-28 05:52:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 260 states have (on average 1.7538461538461538) internal successors, (456), 328 states have internal predecessors, (456), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 472 transitions. [2021-12-28 05:52:47,454 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 472 transitions. Word has length 17 [2021-12-28 05:52:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:47,454 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 472 transitions. [2021-12-28 05:52:47,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 472 transitions. [2021-12-28 05:52:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:52:47,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:47,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:47,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 05:52:47,466 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:47,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash 187770212, now seen corresponding path program 1 times [2021-12-28 05:52:47,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:47,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002119497] [2021-12-28 05:52:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:47,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:47,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:47,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002119497] [2021-12-28 05:52:47,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002119497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:47,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:47,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:52:47,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219847922] [2021-12-28 05:52:47,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:47,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:47,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:47,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:47,569 INFO L87 Difference]: Start difference. First operand 339 states and 472 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:47,723 INFO L93 Difference]: Finished difference Result 386 states and 491 transitions. [2021-12-28 05:52:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-28 05:52:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:47,726 INFO L225 Difference]: With dead ends: 386 [2021-12-28 05:52:47,726 INFO L226 Difference]: Without dead ends: 386 [2021-12-28 05:52:47,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:47,727 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 184 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:47,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 460 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-12-28 05:52:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 339. [2021-12-28 05:52:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 260 states have (on average 1.7307692307692308) internal successors, (450), 328 states have internal predecessors, (450), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 466 transitions. [2021-12-28 05:52:47,735 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 466 transitions. Word has length 17 [2021-12-28 05:52:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:47,735 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 466 transitions. [2021-12-28 05:52:47,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 466 transitions. [2021-12-28 05:52:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 05:52:47,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:47,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:47,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 05:52:47,736 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:47,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1574138016, now seen corresponding path program 1 times [2021-12-28 05:52:47,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:47,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913139260] [2021-12-28 05:52:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:47,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:47,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:47,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913139260] [2021-12-28 05:52:47,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913139260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:47,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:47,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:47,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130762254] [2021-12-28 05:52:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:47,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:52:47,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:47,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:52:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:47,825 INFO L87 Difference]: Start difference. First operand 339 states and 466 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:48,176 INFO L93 Difference]: Finished difference Result 704 states and 839 transitions. [2021-12-28 05:52:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:52:48,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-28 05:52:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:48,183 INFO L225 Difference]: With dead ends: 704 [2021-12-28 05:52:48,183 INFO L226 Difference]: Without dead ends: 704 [2021-12-28 05:52:48,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:52:48,184 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 894 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:48,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 562 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:52:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-12-28 05:52:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 336. [2021-12-28 05:52:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 261 states have (on average 1.7011494252873562) internal successors, (444), 325 states have internal predecessors, (444), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 460 transitions. [2021-12-28 05:52:48,195 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 460 transitions. Word has length 18 [2021-12-28 05:52:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:48,195 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 460 transitions. [2021-12-28 05:52:48,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 460 transitions. [2021-12-28 05:52:48,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 05:52:48,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:48,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:48,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 05:52:48,196 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1574138017, now seen corresponding path program 1 times [2021-12-28 05:52:48,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:48,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163295191] [2021-12-28 05:52:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:48,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:48,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:48,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163295191] [2021-12-28 05:52:48,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163295191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:48,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:48,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:52:48,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832693578] [2021-12-28 05:52:48,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:48,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:48,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:48,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:48,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:48,316 INFO L87 Difference]: Start difference. First operand 336 states and 460 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:48,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:48,851 INFO L93 Difference]: Finished difference Result 686 states and 840 transitions. [2021-12-28 05:52:48,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:52:48,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-28 05:52:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:48,854 INFO L225 Difference]: With dead ends: 686 [2021-12-28 05:52:48,855 INFO L226 Difference]: Without dead ends: 686 [2021-12-28 05:52:48,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:52:48,856 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 640 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:48,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 741 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:52:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-28 05:52:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 356. [2021-12-28 05:52:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 281 states have (on average 1.704626334519573) internal successors, (479), 345 states have internal predecessors, (479), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:52:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 495 transitions. [2021-12-28 05:52:48,865 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 495 transitions. Word has length 18 [2021-12-28 05:52:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:48,865 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 495 transitions. [2021-12-28 05:52:48,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 495 transitions. [2021-12-28 05:52:48,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 05:52:48,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:48,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:48,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 05:52:48,867 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1870398950, now seen corresponding path program 1 times [2021-12-28 05:52:48,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:48,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797341023] [2021-12-28 05:52:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:48,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:49,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:49,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797341023] [2021-12-28 05:52:49,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797341023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:49,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:49,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 05:52:49,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652992072] [2021-12-28 05:52:49,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:49,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:52:49,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:49,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:52:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:52:49,064 INFO L87 Difference]: Start difference. First operand 356 states and 495 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:49,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:49,361 INFO L93 Difference]: Finished difference Result 544 states and 724 transitions. [2021-12-28 05:52:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:52:49,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-28 05:52:49,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:49,363 INFO L225 Difference]: With dead ends: 544 [2021-12-28 05:52:49,363 INFO L226 Difference]: Without dead ends: 544 [2021-12-28 05:52:49,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-28 05:52:49,364 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 202 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:49,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 988 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-12-28 05:52:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 415. [2021-12-28 05:52:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 337 states have (on average 1.6706231454005935) internal successors, (563), 400 states have internal predecessors, (563), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 583 transitions. [2021-12-28 05:52:49,374 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 583 transitions. Word has length 22 [2021-12-28 05:52:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:49,374 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 583 transitions. [2021-12-28 05:52:49,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 583 transitions. [2021-12-28 05:52:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 05:52:49,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:49,375 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:49,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 05:52:49,375 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:49,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:49,376 INFO L85 PathProgramCache]: Analyzing trace with hash -189481273, now seen corresponding path program 1 times [2021-12-28 05:52:49,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:49,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057122230] [2021-12-28 05:52:49,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:49,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:49,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:49,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057122230] [2021-12-28 05:52:49,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057122230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:49,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:49,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 05:52:49,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159897433] [2021-12-28 05:52:49,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:49,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 05:52:49,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 05:52:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:52:49,642 INFO L87 Difference]: Start difference. First operand 415 states and 583 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:50,249 INFO L93 Difference]: Finished difference Result 766 states and 1047 transitions. [2021-12-28 05:52:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 05:52:50,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-28 05:52:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:50,252 INFO L225 Difference]: With dead ends: 766 [2021-12-28 05:52:50,252 INFO L226 Difference]: Without dead ends: 764 [2021-12-28 05:52:50,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-28 05:52:50,253 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 549 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:50,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 1684 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:52:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-12-28 05:52:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 409. [2021-12-28 05:52:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 331 states have (on average 1.6676737160120847) internal successors, (552), 394 states have internal predecessors, (552), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 572 transitions. [2021-12-28 05:52:50,262 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 572 transitions. Word has length 23 [2021-12-28 05:52:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:50,263 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 572 transitions. [2021-12-28 05:52:50,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 572 transitions. [2021-12-28 05:52:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 05:52:50,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:50,264 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:50,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 05:52:50,264 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:50,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1937391848, now seen corresponding path program 1 times [2021-12-28 05:52:50,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:50,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469883444] [2021-12-28 05:52:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:50,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:50,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:50,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469883444] [2021-12-28 05:52:50,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469883444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:50,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:50,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:52:50,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374228682] [2021-12-28 05:52:50,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:50,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:50,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:50,322 INFO L87 Difference]: Start difference. First operand 409 states and 572 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:50,347 INFO L93 Difference]: Finished difference Result 442 states and 575 transitions. [2021-12-28 05:52:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:52:50,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-28 05:52:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:50,349 INFO L225 Difference]: With dead ends: 442 [2021-12-28 05:52:50,349 INFO L226 Difference]: Without dead ends: 442 [2021-12-28 05:52:50,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:52:50,350 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 252 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:50,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1135 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-12-28 05:52:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 409. [2021-12-28 05:52:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 331 states have (on average 1.661631419939577) internal successors, (550), 394 states have internal predecessors, (550), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 570 transitions. [2021-12-28 05:52:50,358 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 570 transitions. Word has length 23 [2021-12-28 05:52:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:50,359 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 570 transitions. [2021-12-28 05:52:50,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 570 transitions. [2021-12-28 05:52:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 05:52:50,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:50,360 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:50,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 05:52:50,360 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:50,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash -582568086, now seen corresponding path program 1 times [2021-12-28 05:52:50,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:50,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416398637] [2021-12-28 05:52:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:50,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:50,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:50,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416398637] [2021-12-28 05:52:50,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416398637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:50,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:50,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:52:50,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322253438] [2021-12-28 05:52:50,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:50,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:50,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:50,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:50,420 INFO L87 Difference]: Start difference. First operand 409 states and 570 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:50,447 INFO L93 Difference]: Finished difference Result 438 states and 567 transitions. [2021-12-28 05:52:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:52:50,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-28 05:52:50,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:50,449 INFO L225 Difference]: With dead ends: 438 [2021-12-28 05:52:50,449 INFO L226 Difference]: Without dead ends: 438 [2021-12-28 05:52:50,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:52:50,450 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 249 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:50,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 1131 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:50,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-28 05:52:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 407. [2021-12-28 05:52:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 329 states have (on average 1.6534954407294833) internal successors, (544), 392 states have internal predecessors, (544), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 564 transitions. [2021-12-28 05:52:50,457 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 564 transitions. Word has length 23 [2021-12-28 05:52:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:50,458 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 564 transitions. [2021-12-28 05:52:50,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 564 transitions. [2021-12-28 05:52:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-28 05:52:50,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:50,459 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:50,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 05:52:50,459 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:50,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2129210531, now seen corresponding path program 1 times [2021-12-28 05:52:50,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:50,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250114935] [2021-12-28 05:52:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:50,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:50,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:50,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250114935] [2021-12-28 05:52:50,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250114935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:50,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:50,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:50,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884746391] [2021-12-28 05:52:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:50,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:50,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:50,482 INFO L87 Difference]: Start difference. First operand 407 states and 564 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:50,583 INFO L93 Difference]: Finished difference Result 499 states and 664 transitions. [2021-12-28 05:52:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:50,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-28 05:52:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:50,586 INFO L225 Difference]: With dead ends: 499 [2021-12-28 05:52:50,587 INFO L226 Difference]: Without dead ends: 499 [2021-12-28 05:52:50,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:50,588 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 156 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:50,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 291 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-28 05:52:50,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 404. [2021-12-28 05:52:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 329 states have (on average 1.6261398176291793) internal successors, (535), 389 states have internal predecessors, (535), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 555 transitions. [2021-12-28 05:52:50,598 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 555 transitions. Word has length 24 [2021-12-28 05:52:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:50,598 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 555 transitions. [2021-12-28 05:52:50,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,599 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 555 transitions. [2021-12-28 05:52:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-28 05:52:50,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:50,599 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:50,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 05:52:50,600 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2129210530, now seen corresponding path program 1 times [2021-12-28 05:52:50,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:50,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425269528] [2021-12-28 05:52:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:50,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:50,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:50,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425269528] [2021-12-28 05:52:50,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425269528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:50,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:50,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:52:50,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512218522] [2021-12-28 05:52:50,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:50,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:50,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:50,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:50,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:50,657 INFO L87 Difference]: Start difference. First operand 404 states and 555 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:50,755 INFO L93 Difference]: Finished difference Result 433 states and 552 transitions. [2021-12-28 05:52:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:50,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-28 05:52:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:50,757 INFO L225 Difference]: With dead ends: 433 [2021-12-28 05:52:50,757 INFO L226 Difference]: Without dead ends: 433 [2021-12-28 05:52:50,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:50,758 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 173 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:50,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 382 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-12-28 05:52:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 402. [2021-12-28 05:52:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 329 states have (on average 1.6079027355623101) internal successors, (529), 387 states have internal predecessors, (529), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 549 transitions. [2021-12-28 05:52:50,766 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 549 transitions. Word has length 24 [2021-12-28 05:52:50,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:50,767 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 549 transitions. [2021-12-28 05:52:50,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 549 transitions. [2021-12-28 05:52:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 05:52:50,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:50,768 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:50,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 05:52:50,768 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1695234990, now seen corresponding path program 1 times [2021-12-28 05:52:50,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:50,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78939253] [2021-12-28 05:52:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:50,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:50,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:50,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78939253] [2021-12-28 05:52:50,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78939253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:50,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:50,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:52:50,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99337952] [2021-12-28 05:52:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:50,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:50,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:50,803 INFO L87 Difference]: Start difference. First operand 402 states and 549 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:50,998 INFO L93 Difference]: Finished difference Result 635 states and 810 transitions. [2021-12-28 05:52:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-28 05:52:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:51,002 INFO L225 Difference]: With dead ends: 635 [2021-12-28 05:52:51,002 INFO L226 Difference]: Without dead ends: 635 [2021-12-28 05:52:51,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:51,003 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 298 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:51,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 446 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-12-28 05:52:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 430. [2021-12-28 05:52:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 415 states have internal predecessors, (581), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 601 transitions. [2021-12-28 05:52:51,012 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 601 transitions. Word has length 25 [2021-12-28 05:52:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:51,012 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 601 transitions. [2021-12-28 05:52:51,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 601 transitions. [2021-12-28 05:52:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 05:52:51,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:51,013 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:51,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 05:52:51,014 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:51,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1695234989, now seen corresponding path program 1 times [2021-12-28 05:52:51,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:51,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31630766] [2021-12-28 05:52:51,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:51,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:51,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:51,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31630766] [2021-12-28 05:52:51,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31630766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:51,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:51,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:52:51,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482086524] [2021-12-28 05:52:51,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:51,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:51,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:51,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:51,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:51,144 INFO L87 Difference]: Start difference. First operand 430 states and 601 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:51,418 INFO L93 Difference]: Finished difference Result 473 states and 616 transitions. [2021-12-28 05:52:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:52:51,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-28 05:52:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:51,420 INFO L225 Difference]: With dead ends: 473 [2021-12-28 05:52:51,420 INFO L226 Difference]: Without dead ends: 473 [2021-12-28 05:52:51,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:52:51,421 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 258 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:51,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 651 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-12-28 05:52:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 430. [2021-12-28 05:52:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 357 states have (on average 1.6022408963585435) internal successors, (572), 415 states have internal predecessors, (572), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 592 transitions. [2021-12-28 05:52:51,429 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 592 transitions. Word has length 25 [2021-12-28 05:52:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:51,429 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 592 transitions. [2021-12-28 05:52:51,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 592 transitions. [2021-12-28 05:52:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 05:52:51,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:51,430 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:51,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-28 05:52:51,430 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:51,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1766884672, now seen corresponding path program 1 times [2021-12-28 05:52:51,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:51,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180092269] [2021-12-28 05:52:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:51,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:51,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:51,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180092269] [2021-12-28 05:52:51,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180092269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:51,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:51,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:52:51,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990108788] [2021-12-28 05:52:51,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:51,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:51,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:51,475 INFO L87 Difference]: Start difference. First operand 430 states and 592 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:51,561 INFO L93 Difference]: Finished difference Result 457 states and 592 transitions. [2021-12-28 05:52:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:51,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-28 05:52:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:51,564 INFO L225 Difference]: With dead ends: 457 [2021-12-28 05:52:51,564 INFO L226 Difference]: Without dead ends: 457 [2021-12-28 05:52:51,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:51,565 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 334 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:51,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 298 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-12-28 05:52:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 429. [2021-12-28 05:52:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 357 states have (on average 1.5938375350140057) internal successors, (569), 414 states have internal predecessors, (569), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 589 transitions. [2021-12-28 05:52:51,573 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 589 transitions. Word has length 26 [2021-12-28 05:52:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:51,573 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 589 transitions. [2021-12-28 05:52:51,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 589 transitions. [2021-12-28 05:52:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 05:52:51,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:51,574 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:51,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-28 05:52:51,575 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:51,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:51,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1766884865, now seen corresponding path program 1 times [2021-12-28 05:52:51,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:51,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982154948] [2021-12-28 05:52:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:51,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:51,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:51,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982154948] [2021-12-28 05:52:51,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982154948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:51,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:51,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 05:52:51,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873381035] [2021-12-28 05:52:51,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:51,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:52:51,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:52:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:52:51,636 INFO L87 Difference]: Start difference. First operand 429 states and 589 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:51,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:51,814 INFO L93 Difference]: Finished difference Result 649 states and 872 transitions. [2021-12-28 05:52:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:52:51,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-28 05:52:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:51,817 INFO L225 Difference]: With dead ends: 649 [2021-12-28 05:52:51,817 INFO L226 Difference]: Without dead ends: 649 [2021-12-28 05:52:51,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:52:51,817 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 160 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:51,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 1315 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-12-28 05:52:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 459. [2021-12-28 05:52:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 387 states have (on average 1.5607235142118863) internal successors, (604), 444 states have internal predecessors, (604), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2021-12-28 05:52:51,843 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 26 [2021-12-28 05:52:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:51,843 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2021-12-28 05:52:51,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:51,844 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2021-12-28 05:52:51,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-28 05:52:51,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:51,844 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:51,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-28 05:52:51,845 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:51,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash -808600231, now seen corresponding path program 1 times [2021-12-28 05:52:51,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:51,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110151934] [2021-12-28 05:52:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:51,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:51,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:51,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110151934] [2021-12-28 05:52:51,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110151934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:51,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:51,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:51,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431166205] [2021-12-28 05:52:51,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:51,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:52:51,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:52:51,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:51,900 INFO L87 Difference]: Start difference. First operand 459 states and 624 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:52,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:52,029 INFO L93 Difference]: Finished difference Result 530 states and 691 transitions. [2021-12-28 05:52:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:52:52,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-12-28 05:52:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:52,031 INFO L225 Difference]: With dead ends: 530 [2021-12-28 05:52:52,031 INFO L226 Difference]: Without dead ends: 530 [2021-12-28 05:52:52,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:52:52,032 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 168 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:52,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 676 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-12-28 05:52:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 459. [2021-12-28 05:52:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 387 states have (on average 1.558139534883721) internal successors, (603), 444 states have internal predecessors, (603), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:52:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 623 transitions. [2021-12-28 05:52:52,040 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 623 transitions. Word has length 29 [2021-12-28 05:52:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:52,040 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 623 transitions. [2021-12-28 05:52:52,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 623 transitions. [2021-12-28 05:52:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-28 05:52:52,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:52,041 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:52,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-28 05:52:52,041 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:52,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:52,041 INFO L85 PathProgramCache]: Analyzing trace with hash 703196873, now seen corresponding path program 1 times [2021-12-28 05:52:52,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:52,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790225414] [2021-12-28 05:52:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:52,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:52,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:52,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790225414] [2021-12-28 05:52:52,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790225414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:52,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:52,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:52,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660836025] [2021-12-28 05:52:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:52,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:52:52,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:52:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:52,112 INFO L87 Difference]: Start difference. First operand 459 states and 623 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:52,274 INFO L93 Difference]: Finished difference Result 595 states and 780 transitions. [2021-12-28 05:52:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:52:52,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-28 05:52:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:52,277 INFO L225 Difference]: With dead ends: 595 [2021-12-28 05:52:52,277 INFO L226 Difference]: Without dead ends: 595 [2021-12-28 05:52:52,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:52:52,278 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 199 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:52,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 667 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-12-28 05:52:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 500. [2021-12-28 05:52:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 425 states have (on average 1.5482352941176472) internal successors, (658), 483 states have internal predecessors, (658), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-28 05:52:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 682 transitions. [2021-12-28 05:52:52,297 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 682 transitions. Word has length 30 [2021-12-28 05:52:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:52,297 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 682 transitions. [2021-12-28 05:52:52,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 682 transitions. [2021-12-28 05:52:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 05:52:52,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:52,298 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:52,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-28 05:52:52,298 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:52,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:52,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2144668882, now seen corresponding path program 1 times [2021-12-28 05:52:52,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:52,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542286872] [2021-12-28 05:52:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:52,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:52,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:52,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542286872] [2021-12-28 05:52:52,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542286872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:52,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:52,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:52:52,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828264333] [2021-12-28 05:52:52,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:52,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:52:52,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:52:52,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:52:52,373 INFO L87 Difference]: Start difference. First operand 500 states and 682 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:52,611 INFO L93 Difference]: Finished difference Result 855 states and 1109 transitions. [2021-12-28 05:52:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 05:52:52,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-28 05:52:52,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:52,615 INFO L225 Difference]: With dead ends: 855 [2021-12-28 05:52:52,615 INFO L226 Difference]: Without dead ends: 855 [2021-12-28 05:52:52,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:52:52,616 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 514 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:52,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 1525 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:52,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-12-28 05:52:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 497. [2021-12-28 05:52:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 425 states have (on average 1.5058823529411764) internal successors, (640), 480 states have internal predecessors, (640), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-28 05:52:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 664 transitions. [2021-12-28 05:52:52,626 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 664 transitions. Word has length 32 [2021-12-28 05:52:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:52,627 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 664 transitions. [2021-12-28 05:52:52,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 664 transitions. [2021-12-28 05:52:52,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 05:52:52,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:52,628 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:52,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-28 05:52:52,628 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1462337803, now seen corresponding path program 1 times [2021-12-28 05:52:52,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:52,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337195061] [2021-12-28 05:52:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:52,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:52,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:52,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337195061] [2021-12-28 05:52:52,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337195061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:52,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:52,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:52:52,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064633470] [2021-12-28 05:52:52,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:52,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:52,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:52,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:52,729 INFO L87 Difference]: Start difference. First operand 497 states and 664 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:53,204 INFO L93 Difference]: Finished difference Result 877 states and 1128 transitions. [2021-12-28 05:52:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:52:53,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-28 05:52:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:53,207 INFO L225 Difference]: With dead ends: 877 [2021-12-28 05:52:53,207 INFO L226 Difference]: Without dead ends: 877 [2021-12-28 05:52:53,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:52:53,208 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 428 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:53,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 1076 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:52:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-12-28 05:52:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 534. [2021-12-28 05:52:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 459 states have (on average 1.4880174291938997) internal successors, (683), 515 states have internal predecessors, (683), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-28 05:52:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 711 transitions. [2021-12-28 05:52:53,220 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 711 transitions. Word has length 32 [2021-12-28 05:52:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:53,221 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 711 transitions. [2021-12-28 05:52:53,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 711 transitions. [2021-12-28 05:52:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-28 05:52:53,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:53,222 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:53,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-28 05:52:53,222 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:53,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1912168099, now seen corresponding path program 1 times [2021-12-28 05:52:53,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:53,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826649935] [2021-12-28 05:52:53,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:53,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:53,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:53,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826649935] [2021-12-28 05:52:53,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826649935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:53,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:53,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:52:53,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630857496] [2021-12-28 05:52:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:53,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:52:53,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:52:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:52:53,359 INFO L87 Difference]: Start difference. First operand 534 states and 711 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:53,770 INFO L93 Difference]: Finished difference Result 667 states and 839 transitions. [2021-12-28 05:52:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:52:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-12-28 05:52:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:53,773 INFO L225 Difference]: With dead ends: 667 [2021-12-28 05:52:53,773 INFO L226 Difference]: Without dead ends: 667 [2021-12-28 05:52:53,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-12-28 05:52:53,773 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 388 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:53,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 809 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:52:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-12-28 05:52:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 534. [2021-12-28 05:52:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 459 states have (on average 1.4793028322440087) internal successors, (679), 515 states have internal predecessors, (679), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-28 05:52:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 707 transitions. [2021-12-28 05:52:53,786 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 707 transitions. Word has length 33 [2021-12-28 05:52:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:53,786 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 707 transitions. [2021-12-28 05:52:53,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 707 transitions. [2021-12-28 05:52:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-28 05:52:53,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:53,787 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:53,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-28 05:52:53,788 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:53,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash -557500014, now seen corresponding path program 1 times [2021-12-28 05:52:53,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:53,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179438877] [2021-12-28 05:52:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:53,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:53,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:53,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179438877] [2021-12-28 05:52:53,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179438877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:53,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:53,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:52:53,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095868119] [2021-12-28 05:52:53,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:53,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:53,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:53,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:53,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:53,968 INFO L87 Difference]: Start difference. First operand 534 states and 707 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:54,155 INFO L93 Difference]: Finished difference Result 579 states and 753 transitions. [2021-12-28 05:52:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:52:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-28 05:52:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:54,158 INFO L225 Difference]: With dead ends: 579 [2021-12-28 05:52:54,158 INFO L226 Difference]: Without dead ends: 579 [2021-12-28 05:52:54,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:52:54,159 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 111 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:54,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 851 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:54,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-12-28 05:52:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 534. [2021-12-28 05:52:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 459 states have (on average 1.477124183006536) internal successors, (678), 515 states have internal predecessors, (678), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-28 05:52:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 706 transitions. [2021-12-28 05:52:54,168 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 706 transitions. Word has length 34 [2021-12-28 05:52:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:54,168 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 706 transitions. [2021-12-28 05:52:54,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 706 transitions. [2021-12-28 05:52:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-28 05:52:54,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:54,169 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:54,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-28 05:52:54,170 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1394937876, now seen corresponding path program 1 times [2021-12-28 05:52:54,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:54,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144626392] [2021-12-28 05:52:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:54,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:54,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:54,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144626392] [2021-12-28 05:52:54,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144626392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:54,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:54,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:52:54,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956004919] [2021-12-28 05:52:54,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:54,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:54,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:54,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:54,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:54,211 INFO L87 Difference]: Start difference. First operand 534 states and 706 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:54,385 INFO L93 Difference]: Finished difference Result 625 states and 808 transitions. [2021-12-28 05:52:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:52:54,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-28 05:52:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:54,387 INFO L225 Difference]: With dead ends: 625 [2021-12-28 05:52:54,387 INFO L226 Difference]: Without dead ends: 625 [2021-12-28 05:52:54,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:52:54,388 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 493 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:54,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 579 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-12-28 05:52:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 533. [2021-12-28 05:52:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 459 states have (on average 1.4727668845315904) internal successors, (676), 514 states have internal predecessors, (676), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-28 05:52:54,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 704 transitions. [2021-12-28 05:52:54,398 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 704 transitions. Word has length 34 [2021-12-28 05:52:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:54,399 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 704 transitions. [2021-12-28 05:52:54,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:54,399 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 704 transitions. [2021-12-28 05:52:54,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-28 05:52:54,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:54,400 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:54,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-28 05:52:54,400 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:54,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1394937875, now seen corresponding path program 1 times [2021-12-28 05:52:54,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:54,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954913467] [2021-12-28 05:52:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:54,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:54,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:54,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954913467] [2021-12-28 05:52:54,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954913467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:54,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:54,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:52:54,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511205054] [2021-12-28 05:52:54,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:54,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:54,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:54,483 INFO L87 Difference]: Start difference. First operand 533 states and 704 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:54,647 INFO L93 Difference]: Finished difference Result 557 states and 705 transitions. [2021-12-28 05:52:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:52:54,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-28 05:52:54,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:54,650 INFO L225 Difference]: With dead ends: 557 [2021-12-28 05:52:54,650 INFO L226 Difference]: Without dead ends: 557 [2021-12-28 05:52:54,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:52:54,650 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 523 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:54,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 592 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:54,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-12-28 05:52:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 532. [2021-12-28 05:52:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 459 states have (on average 1.4684095860566448) internal successors, (674), 513 states have internal predecessors, (674), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-28 05:52:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 702 transitions. [2021-12-28 05:52:54,659 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 702 transitions. Word has length 34 [2021-12-28 05:52:54,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:54,659 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 702 transitions. [2021-12-28 05:52:54,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:54,660 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 702 transitions. [2021-12-28 05:52:54,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 05:52:54,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:54,660 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:54,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-28 05:52:54,660 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash -505498803, now seen corresponding path program 1 times [2021-12-28 05:52:54,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:54,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431483616] [2021-12-28 05:52:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:54,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:54,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:54,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431483616] [2021-12-28 05:52:54,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431483616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:54,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:54,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:54,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964678805] [2021-12-28 05:52:54,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:54,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:52:54,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:54,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:52:54,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:54,702 INFO L87 Difference]: Start difference. First operand 532 states and 702 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:54,893 INFO L93 Difference]: Finished difference Result 926 states and 1168 transitions. [2021-12-28 05:52:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:52:54,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-28 05:52:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:54,897 INFO L225 Difference]: With dead ends: 926 [2021-12-28 05:52:54,897 INFO L226 Difference]: Without dead ends: 926 [2021-12-28 05:52:54,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:54,897 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 594 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:54,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 575 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:54,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-12-28 05:52:54,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 529. [2021-12-28 05:52:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 459 states have (on average 1.4553376906318083) internal successors, (668), 510 states have internal predecessors, (668), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-28 05:52:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 696 transitions. [2021-12-28 05:52:54,909 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 696 transitions. Word has length 36 [2021-12-28 05:52:54,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:54,909 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 696 transitions. [2021-12-28 05:52:54,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 696 transitions. [2021-12-28 05:52:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 05:52:54,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:54,910 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:54,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-28 05:52:54,910 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:54,911 INFO L85 PathProgramCache]: Analyzing trace with hash -505498802, now seen corresponding path program 1 times [2021-12-28 05:52:54,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:54,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059934504] [2021-12-28 05:52:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:54,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:54,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:54,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059934504] [2021-12-28 05:52:54,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059934504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:54,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:54,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:52:54,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630218969] [2021-12-28 05:52:54,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:54,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:54,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:54,991 INFO L87 Difference]: Start difference. First operand 529 states and 696 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:55,204 INFO L93 Difference]: Finished difference Result 765 states and 959 transitions. [2021-12-28 05:52:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:52:55,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-28 05:52:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:55,207 INFO L225 Difference]: With dead ends: 765 [2021-12-28 05:52:55,207 INFO L226 Difference]: Without dead ends: 765 [2021-12-28 05:52:55,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:52:55,207 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 708 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:55,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 700 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-12-28 05:52:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 528. [2021-12-28 05:52:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 459 states have (on average 1.4509803921568627) internal successors, (666), 509 states have internal predecessors, (666), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-28 05:52:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 694 transitions. [2021-12-28 05:52:55,217 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 694 transitions. Word has length 36 [2021-12-28 05:52:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:55,217 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 694 transitions. [2021-12-28 05:52:55,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 694 transitions. [2021-12-28 05:52:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 05:52:55,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:55,218 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:55,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-28 05:52:55,219 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:55,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash -505498641, now seen corresponding path program 1 times [2021-12-28 05:52:55,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:55,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609195297] [2021-12-28 05:52:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:55,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:55,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:55,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:55,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609195297] [2021-12-28 05:52:55,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609195297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:55,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:55,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:55,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947310233] [2021-12-28 05:52:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:55,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:52:55,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:52:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:55,328 INFO L87 Difference]: Start difference. First operand 528 states and 694 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:55,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:55,568 INFO L93 Difference]: Finished difference Result 683 states and 837 transitions. [2021-12-28 05:52:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:52:55,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-28 05:52:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:55,571 INFO L225 Difference]: With dead ends: 683 [2021-12-28 05:52:55,571 INFO L226 Difference]: Without dead ends: 683 [2021-12-28 05:52:55,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:55,572 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 611 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:55,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 450 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:52:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-28 05:52:55,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 528. [2021-12-28 05:52:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 459 states have (on average 1.446623093681917) internal successors, (664), 509 states have internal predecessors, (664), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-28 05:52:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 692 transitions. [2021-12-28 05:52:55,581 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 692 transitions. Word has length 36 [2021-12-28 05:52:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:55,581 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 692 transitions. [2021-12-28 05:52:55,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 692 transitions. [2021-12-28 05:52:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-28 05:52:55,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:55,582 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:55,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-28 05:52:55,582 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:55,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2111288145, now seen corresponding path program 1 times [2021-12-28 05:52:55,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:55,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446790180] [2021-12-28 05:52:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:55,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 05:52:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:52:55,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:55,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446790180] [2021-12-28 05:52:55,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446790180] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:52:55,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794995587] [2021-12-28 05:52:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:55,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:52:55,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:52:55,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:52:55,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 05:52:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:55,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-28 05:52:55,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:52:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:56,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:52:56,095 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-28 05:52:56,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2021-12-28 05:52:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:52:56,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794995587] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:52:56,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 05:52:56,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2021-12-28 05:52:56,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674924688] [2021-12-28 05:52:56,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 05:52:56,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:52:56,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:56,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:52:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:52:56,152 INFO L87 Difference]: Start difference. First operand 528 states and 692 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:52:56,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:56,820 INFO L93 Difference]: Finished difference Result 1659 states and 2022 transitions. [2021-12-28 05:52:56,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 05:52:56,820 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 46 [2021-12-28 05:52:56,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:56,825 INFO L225 Difference]: With dead ends: 1659 [2021-12-28 05:52:56,825 INFO L226 Difference]: Without dead ends: 1659 [2021-12-28 05:52:56,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-12-28 05:52:56,825 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 2182 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:56,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 1561 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:52:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2021-12-28 05:52:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 628. [2021-12-28 05:52:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 556 states have (on average 1.3974820143884892) internal successors, (777), 602 states have internal predecessors, (777), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 15 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-28 05:52:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 817 transitions. [2021-12-28 05:52:56,840 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 817 transitions. Word has length 46 [2021-12-28 05:52:56,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:56,841 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 817 transitions. [2021-12-28 05:52:56,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:52:56,841 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 817 transitions. [2021-12-28 05:52:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 05:52:56,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:56,842 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:56,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 05:52:57,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-28 05:52:57,065 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:57,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1830908708, now seen corresponding path program 1 times [2021-12-28 05:52:57,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:57,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667914641] [2021-12-28 05:52:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:57,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:57,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:57,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 05:52:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:57,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:52:57,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:57,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667914641] [2021-12-28 05:52:57,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667914641] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:52:57,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997891406] [2021-12-28 05:52:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:57,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:52:57,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:52:57,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:52:57,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 05:52:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:57,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:52:57,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:52:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:57,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:52:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:52:57,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997891406] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:52:57,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 05:52:57,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-28 05:52:57,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710172485] [2021-12-28 05:52:57,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 05:52:57,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:52:57,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:57,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:52:57,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:52:57,426 INFO L87 Difference]: Start difference. First operand 628 states and 817 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-28 05:52:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:57,491 INFO L93 Difference]: Finished difference Result 1810 states and 2379 transitions. [2021-12-28 05:52:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 05:52:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2021-12-28 05:52:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:57,497 INFO L225 Difference]: With dead ends: 1810 [2021-12-28 05:52:57,497 INFO L226 Difference]: Without dead ends: 1810 [2021-12-28 05:52:57,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:52:57,498 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 859 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:57,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1005 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2021-12-28 05:52:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1180. [2021-12-28 05:52:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1099 states have (on average 1.4222020018198362) internal successors, (1563), 1145 states have internal predecessors, (1563), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 24 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-28 05:52:57,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1621 transitions. [2021-12-28 05:52:57,521 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1621 transitions. Word has length 50 [2021-12-28 05:52:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:57,521 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 1621 transitions. [2021-12-28 05:52:57,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-28 05:52:57,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1621 transitions. [2021-12-28 05:52:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 05:52:57,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:57,522 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:52:57,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 05:52:57,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-28 05:52:57,735 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1129844130, now seen corresponding path program 1 times [2021-12-28 05:52:57,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:57,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805149163] [2021-12-28 05:52:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:57,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:57,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 05:52:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:52:57,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:57,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805149163] [2021-12-28 05:52:57,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805149163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:57,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:57,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:52:57,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261166185] [2021-12-28 05:52:57,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:57,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:52:57,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:57,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:52:57,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:52:57,822 INFO L87 Difference]: Start difference. First operand 1180 states and 1621 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:52:57,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:57,989 INFO L93 Difference]: Finished difference Result 1280 states and 1724 transitions. [2021-12-28 05:52:57,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:52:57,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2021-12-28 05:52:57,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:57,994 INFO L225 Difference]: With dead ends: 1280 [2021-12-28 05:52:57,994 INFO L226 Difference]: Without dead ends: 1280 [2021-12-28 05:52:57,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:52:57,995 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 502 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:57,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 429 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-12-28 05:52:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1177. [2021-12-28 05:52:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1099 states have (on average 1.4094631483166515) internal successors, (1549), 1142 states have internal predecessors, (1549), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 24 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-28 05:52:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1607 transitions. [2021-12-28 05:52:58,012 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1607 transitions. Word has length 50 [2021-12-28 05:52:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:58,012 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1607 transitions. [2021-12-28 05:52:58,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:52:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1607 transitions. [2021-12-28 05:52:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 05:52:58,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:58,014 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:52:58,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-28 05:52:58,014 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:58,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash -642104005, now seen corresponding path program 1 times [2021-12-28 05:52:58,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:58,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084546103] [2021-12-28 05:52:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:58,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:58,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:58,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084546103] [2021-12-28 05:52:58,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084546103] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:52:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77455288] [2021-12-28 05:52:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:58,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:52:58,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:52:58,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:52:58,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 05:52:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:58,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:52:58,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:52:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:58,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:52:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:58,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77455288] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:52:58,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 05:52:58,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-28 05:52:58,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573375416] [2021-12-28 05:52:58,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 05:52:58,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:52:58,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:52:58,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:52:58,366 INFO L87 Difference]: Start difference. First operand 1177 states and 1607 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 05:52:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:58,435 INFO L93 Difference]: Finished difference Result 2251 states and 2962 transitions. [2021-12-28 05:52:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 05:52:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2021-12-28 05:52:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:58,442 INFO L225 Difference]: With dead ends: 2251 [2021-12-28 05:52:58,443 INFO L226 Difference]: Without dead ends: 2251 [2021-12-28 05:52:58,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:52:58,443 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 554 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:58,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 715 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:58,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2021-12-28 05:52:58,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 1926. [2021-12-28 05:52:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1926 states, 1818 states have (on average 1.3778877887788779) internal successors, (2505), 1861 states have internal predecessors, (2505), 59 states have call successors, (59), 10 states have call predecessors, (59), 10 states have return successors, (59), 54 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-28 05:52:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 2623 transitions. [2021-12-28 05:52:58,471 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 2623 transitions. Word has length 51 [2021-12-28 05:52:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:58,472 INFO L470 AbstractCegarLoop]: Abstraction has 1926 states and 2623 transitions. [2021-12-28 05:52:58,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 05:52:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 2623 transitions. [2021-12-28 05:52:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 05:52:58,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:58,473 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:52:58,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 05:52:58,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:52:58,690 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash -55297991, now seen corresponding path program 1 times [2021-12-28 05:52:58,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102132551] [2021-12-28 05:52:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:58,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:52:58,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:58,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102132551] [2021-12-28 05:52:58,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102132551] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:52:58,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117370611] [2021-12-28 05:52:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:58,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:52:58,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:52:58,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:52:58,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 05:52:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:58,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:52:58,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:52:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:52:58,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:52:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:52:58,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117370611] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:52:58,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 05:52:58,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2021-12-28 05:52:58,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562709841] [2021-12-28 05:52:58,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 05:52:58,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:52:58,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:52:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:52:59,000 INFO L87 Difference]: Start difference. First operand 1926 states and 2623 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 05:52:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:59,068 INFO L93 Difference]: Finished difference Result 6791 states and 9240 transitions. [2021-12-28 05:52:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:52:59,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2021-12-28 05:52:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:59,092 INFO L225 Difference]: With dead ends: 6791 [2021-12-28 05:52:59,093 INFO L226 Difference]: Without dead ends: 6791 [2021-12-28 05:52:59,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:52:59,095 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 566 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:59,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 1086 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2021-12-28 05:52:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 4827. [2021-12-28 05:52:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4629 states have (on average 1.3687621516526247) internal successors, (6336), 4677 states have internal predecessors, (6336), 149 states have call successors, (149), 10 states have call predecessors, (149), 10 states have return successors, (149), 139 states have call predecessors, (149), 149 states have call successors, (149) [2021-12-28 05:52:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6634 transitions. [2021-12-28 05:52:59,190 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6634 transitions. Word has length 51 [2021-12-28 05:52:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:59,191 INFO L470 AbstractCegarLoop]: Abstraction has 4827 states and 6634 transitions. [2021-12-28 05:52:59,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 05:52:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6634 transitions. [2021-12-28 05:52:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 05:52:59,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:59,195 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:52:59,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 05:52:59,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-28 05:52:59,411 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash -735356361, now seen corresponding path program 1 times [2021-12-28 05:52:59,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:59,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345350772] [2021-12-28 05:52:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:59,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:52:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:59,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:59,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345350772] [2021-12-28 05:52:59,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345350772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:59,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:59,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:59,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851359738] [2021-12-28 05:52:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:59,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:59,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:59,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:59,459 INFO L87 Difference]: Start difference. First operand 4827 states and 6634 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:59,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:59,483 INFO L93 Difference]: Finished difference Result 5546 states and 7718 transitions. [2021-12-28 05:52:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:59,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-28 05:52:59,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:59,492 INFO L225 Difference]: With dead ends: 5546 [2021-12-28 05:52:59,492 INFO L226 Difference]: Without dead ends: 5546 [2021-12-28 05:52:59,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:59,493 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 153 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:59,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 707 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2021-12-28 05:52:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 4588. [2021-12-28 05:52:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4404 states have (on average 1.3771571298819256) internal successors, (6065), 4452 states have internal predecessors, (6065), 136 states have call successors, (136), 9 states have call predecessors, (136), 9 states have return successors, (136), 126 states have call predecessors, (136), 136 states have call successors, (136) [2021-12-28 05:52:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 6337 transitions. [2021-12-28 05:52:59,570 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 6337 transitions. Word has length 51 [2021-12-28 05:52:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:59,571 INFO L470 AbstractCegarLoop]: Abstraction has 4588 states and 6337 transitions. [2021-12-28 05:52:59,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:52:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 6337 transitions. [2021-12-28 05:52:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 05:52:59,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:59,572 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:52:59,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-28 05:52:59,573 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:52:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1366525278, now seen corresponding path program 1 times [2021-12-28 05:52:59,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:59,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078407473] [2021-12-28 05:52:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:59,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:52:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:59,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:59,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078407473] [2021-12-28 05:52:59,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078407473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:59,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:59,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 05:52:59,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040780666] [2021-12-28 05:52:59,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:59,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 05:52:59,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:59,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 05:52:59,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:52:59,739 INFO L87 Difference]: Start difference. First operand 4588 states and 6337 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:00,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:00,078 INFO L93 Difference]: Finished difference Result 4636 states and 6368 transitions. [2021-12-28 05:53:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 05:53:00,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-28 05:53:00,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:00,085 INFO L225 Difference]: With dead ends: 4636 [2021-12-28 05:53:00,086 INFO L226 Difference]: Without dead ends: 4636 [2021-12-28 05:53:00,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-12-28 05:53:00,090 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 528 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:00,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 812 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:53:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-12-28 05:53:00,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4590. [2021-12-28 05:53:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 4406 states have (on average 1.377212891511575) internal successors, (6068), 4454 states have internal predecessors, (6068), 136 states have call successors, (136), 9 states have call predecessors, (136), 9 states have return successors, (136), 126 states have call predecessors, (136), 136 states have call successors, (136) [2021-12-28 05:53:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 6340 transitions. [2021-12-28 05:53:00,148 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 6340 transitions. Word has length 51 [2021-12-28 05:53:00,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:00,149 INFO L470 AbstractCegarLoop]: Abstraction has 4590 states and 6340 transitions. [2021-12-28 05:53:00,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:00,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 6340 transitions. [2021-12-28 05:53:00,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 05:53:00,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:00,150 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:00,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-28 05:53:00,150 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1366525340, now seen corresponding path program 1 times [2021-12-28 05:53:00,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:00,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992452826] [2021-12-28 05:53:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:00,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:00,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:00,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:00,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992452826] [2021-12-28 05:53:00,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992452826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:00,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:00,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:53:00,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941799153] [2021-12-28 05:53:00,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:00,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:53:00,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:00,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:53:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:53:00,255 INFO L87 Difference]: Start difference. First operand 4590 states and 6340 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:00,409 INFO L93 Difference]: Finished difference Result 4635 states and 6366 transitions. [2021-12-28 05:53:00,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:53:00,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-28 05:53:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:00,417 INFO L225 Difference]: With dead ends: 4635 [2021-12-28 05:53:00,417 INFO L226 Difference]: Without dead ends: 4635 [2021-12-28 05:53:00,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:53:00,418 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 286 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:00,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 455 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:53:00,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2021-12-28 05:53:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4587. [2021-12-28 05:53:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4404 states have (on average 1.3767029972752043) internal successors, (6063), 4451 states have internal predecessors, (6063), 136 states have call successors, (136), 9 states have call predecessors, (136), 9 states have return successors, (136), 126 states have call predecessors, (136), 136 states have call successors, (136) [2021-12-28 05:53:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 6335 transitions. [2021-12-28 05:53:00,490 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 6335 transitions. Word has length 51 [2021-12-28 05:53:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:00,490 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 6335 transitions. [2021-12-28 05:53:00,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:00,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 6335 transitions. [2021-12-28 05:53:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 05:53:00,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:00,491 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:00,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-28 05:53:00,492 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1854248023, now seen corresponding path program 1 times [2021-12-28 05:53:00,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:00,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141761886] [2021-12-28 05:53:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:00,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:53:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:00,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:00,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141761886] [2021-12-28 05:53:00,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141761886] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:00,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98518933] [2021-12-28 05:53:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:00,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:00,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:53:00,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 05:53:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:00,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-28 05:53:00,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:01,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:53:01,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-28 05:53:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:53:01,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:53:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:53:01,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98518933] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:53:01,297 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 05:53:01,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 15 [2021-12-28 05:53:01,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700929369] [2021-12-28 05:53:01,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 05:53:01,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 05:53:01,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:01,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 05:53:01,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-28 05:53:01,300 INFO L87 Difference]: Start difference. First operand 4587 states and 6335 transitions. Second operand has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 05:53:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:02,014 INFO L93 Difference]: Finished difference Result 6000 states and 8330 transitions. [2021-12-28 05:53:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 05:53:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2021-12-28 05:53:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:02,025 INFO L225 Difference]: With dead ends: 6000 [2021-12-28 05:53:02,025 INFO L226 Difference]: Without dead ends: 5993 [2021-12-28 05:53:02,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-12-28 05:53:02,031 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 643 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:02,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 2079 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:53:02,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2021-12-28 05:53:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 4632. [2021-12-28 05:53:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4449 states have (on average 1.372443245673185) internal successors, (6106), 4496 states have internal predecessors, (6106), 136 states have call successors, (136), 9 states have call predecessors, (136), 9 states have return successors, (136), 126 states have call predecessors, (136), 136 states have call successors, (136) [2021-12-28 05:53:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 6378 transitions. [2021-12-28 05:53:02,090 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 6378 transitions. Word has length 52 [2021-12-28 05:53:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:02,091 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 6378 transitions. [2021-12-28 05:53:02,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.866666666666667) internal successors, (148), 15 states have internal predecessors, (148), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 05:53:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 6378 transitions. [2021-12-28 05:53:02,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 05:53:02,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:02,093 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:02,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:02,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:02,318 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:02,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1882183379, now seen corresponding path program 1 times [2021-12-28 05:53:02,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:02,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397309391] [2021-12-28 05:53:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:02,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 05:53:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:02,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 05:53:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:53:02,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:02,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397309391] [2021-12-28 05:53:02,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397309391] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:02,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540863464] [2021-12-28 05:53:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:02,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:02,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:02,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:53:02,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 05:53:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:02,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-28 05:53:02,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:02,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:53:02,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-28 05:53:02,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:53:02,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-28 05:53:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:53:02,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:53:02,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540863464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:02,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 05:53:02,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2021-12-28 05:53:02,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409261196] [2021-12-28 05:53:02,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:02,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:53:02,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:53:02,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:53:02,764 INFO L87 Difference]: Start difference. First operand 4632 states and 6378 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:53:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:03,024 INFO L93 Difference]: Finished difference Result 3697 states and 5153 transitions. [2021-12-28 05:53:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:53:03,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2021-12-28 05:53:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:03,030 INFO L225 Difference]: With dead ends: 3697 [2021-12-28 05:53:03,030 INFO L226 Difference]: Without dead ends: 3697 [2021-12-28 05:53:03,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-12-28 05:53:03,032 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 298 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:03,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1444 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:53:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-12-28 05:53:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 2997. [2021-12-28 05:53:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2879 states have (on average 1.408475164987843) internal successors, (4055), 2916 states have internal predecessors, (4055), 76 states have call successors, (76), 4 states have call predecessors, (76), 4 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2021-12-28 05:53:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 4207 transitions. [2021-12-28 05:53:03,066 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 4207 transitions. Word has length 54 [2021-12-28 05:53:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:03,066 INFO L470 AbstractCegarLoop]: Abstraction has 2997 states and 4207 transitions. [2021-12-28 05:53:03,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:53:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 4207 transitions. [2021-12-28 05:53:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 05:53:03,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:03,088 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:03,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:03,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:03,301 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1840199306, now seen corresponding path program 1 times [2021-12-28 05:53:03,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:03,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175675695] [2021-12-28 05:53:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:03,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:03,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:03,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:03,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175675695] [2021-12-28 05:53:03,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175675695] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:03,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:03,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 05:53:03,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811413500] [2021-12-28 05:53:03,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:03,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 05:53:03,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 05:53:03,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-12-28 05:53:03,518 INFO L87 Difference]: Start difference. First operand 2997 states and 4207 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:04,210 INFO L93 Difference]: Finished difference Result 7440 states and 10662 transitions. [2021-12-28 05:53:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 05:53:04,210 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-28 05:53:04,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:04,222 INFO L225 Difference]: With dead ends: 7440 [2021-12-28 05:53:04,222 INFO L226 Difference]: Without dead ends: 7440 [2021-12-28 05:53:04,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2021-12-28 05:53:04,223 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1418 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:04,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 1260 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:53:04,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7440 states. [2021-12-28 05:53:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7440 to 4294. [2021-12-28 05:53:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 4121 states have (on average 1.4098519776753216) internal successors, (5810), 4182 states have internal predecessors, (5810), 129 states have call successors, (129), 7 states have call predecessors, (129), 7 states have return successors, (129), 104 states have call predecessors, (129), 129 states have call successors, (129) [2021-12-28 05:53:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 6068 transitions. [2021-12-28 05:53:04,297 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 6068 transitions. Word has length 54 [2021-12-28 05:53:04,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:04,297 INFO L470 AbstractCegarLoop]: Abstraction has 4294 states and 6068 transitions. [2021-12-28 05:53:04,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 6068 transitions. [2021-12-28 05:53:04,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 05:53:04,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:04,299 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:04,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-28 05:53:04,299 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:04,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1840199305, now seen corresponding path program 1 times [2021-12-28 05:53:04,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:04,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83065990] [2021-12-28 05:53:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:04,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:04,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:04,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83065990] [2021-12-28 05:53:04,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83065990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:04,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:04,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 05:53:04,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51202158] [2021-12-28 05:53:04,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:04,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:53:04,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:04,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:53:04,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:53:04,632 INFO L87 Difference]: Start difference. First operand 4294 states and 6068 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:05,404 INFO L93 Difference]: Finished difference Result 7146 states and 10222 transitions. [2021-12-28 05:53:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 05:53:05,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-28 05:53:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:05,416 INFO L225 Difference]: With dead ends: 7146 [2021-12-28 05:53:05,417 INFO L226 Difference]: Without dead ends: 7146 [2021-12-28 05:53:05,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2021-12-28 05:53:05,417 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1078 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:05,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 1113 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:53:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7146 states. [2021-12-28 05:53:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7146 to 4539. [2021-12-28 05:53:05,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4539 states, 4352 states have (on average 1.4092371323529411) internal successors, (6133), 4415 states have internal predecessors, (6133), 142 states have call successors, (142), 8 states have call predecessors, (142), 8 states have return successors, (142), 115 states have call predecessors, (142), 142 states have call successors, (142) [2021-12-28 05:53:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 6417 transitions. [2021-12-28 05:53:05,478 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 6417 transitions. Word has length 54 [2021-12-28 05:53:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:05,478 INFO L470 AbstractCegarLoop]: Abstraction has 4539 states and 6417 transitions. [2021-12-28 05:53:05,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 6417 transitions. [2021-12-28 05:53:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 05:53:05,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:05,479 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:05,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-28 05:53:05,480 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:05,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:05,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1838352264, now seen corresponding path program 1 times [2021-12-28 05:53:05,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:05,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791221518] [2021-12-28 05:53:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:05,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:06,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:06,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:06,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791221518] [2021-12-28 05:53:06,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791221518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:06,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:06,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 05:53:06,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456033910] [2021-12-28 05:53:06,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:06,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 05:53:06,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 05:53:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:53:06,063 INFO L87 Difference]: Start difference. First operand 4539 states and 6417 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:06,477 INFO L93 Difference]: Finished difference Result 4581 states and 6459 transitions. [2021-12-28 05:53:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:53:06,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-28 05:53:06,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:06,486 INFO L225 Difference]: With dead ends: 4581 [2021-12-28 05:53:06,486 INFO L226 Difference]: Without dead ends: 4581 [2021-12-28 05:53:06,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-28 05:53:06,491 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 122 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:06,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 751 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:53:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2021-12-28 05:53:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 4577. [2021-12-28 05:53:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 4390 states have (on average 1.4056947608200456) internal successors, (6171), 4453 states have internal predecessors, (6171), 142 states have call successors, (142), 8 states have call predecessors, (142), 8 states have return successors, (142), 115 states have call predecessors, (142), 142 states have call successors, (142) [2021-12-28 05:53:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6455 transitions. [2021-12-28 05:53:06,555 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6455 transitions. Word has length 54 [2021-12-28 05:53:06,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:06,555 INFO L470 AbstractCegarLoop]: Abstraction has 4577 states and 6455 transitions. [2021-12-28 05:53:06,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6455 transitions. [2021-12-28 05:53:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 05:53:06,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:06,557 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:06,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-28 05:53:06,557 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1320627297, now seen corresponding path program 1 times [2021-12-28 05:53:06,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:06,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142121548] [2021-12-28 05:53:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:06,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:06,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:06,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142121548] [2021-12-28 05:53:06,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142121548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:06,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:06,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 05:53:06,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854549447] [2021-12-28 05:53:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:06,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:53:06,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:53:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:53:06,782 INFO L87 Difference]: Start difference. First operand 4577 states and 6455 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:07,288 INFO L93 Difference]: Finished difference Result 7643 states and 10898 transitions. [2021-12-28 05:53:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 05:53:07,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-28 05:53:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:07,302 INFO L225 Difference]: With dead ends: 7643 [2021-12-28 05:53:07,302 INFO L226 Difference]: Without dead ends: 7643 [2021-12-28 05:53:07,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-12-28 05:53:07,303 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 1075 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:07,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 1118 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:53:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7643 states. [2021-12-28 05:53:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7643 to 5814. [2021-12-28 05:53:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5814 states, 5517 states have (on average 1.3839042958129417) internal successors, (7635), 5628 states have internal predecessors, (7635), 246 states have call successors, (246), 14 states have call predecessors, (246), 14 states have return successors, (246), 171 states have call predecessors, (246), 246 states have call successors, (246) [2021-12-28 05:53:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 8127 transitions. [2021-12-28 05:53:07,425 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 8127 transitions. Word has length 55 [2021-12-28 05:53:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:07,425 INFO L470 AbstractCegarLoop]: Abstraction has 5814 states and 8127 transitions. [2021-12-28 05:53:07,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 8127 transitions. [2021-12-28 05:53:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 05:53:07,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:07,426 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:07,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-28 05:53:07,426 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:07,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1320627296, now seen corresponding path program 1 times [2021-12-28 05:53:07,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:07,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468462554] [2021-12-28 05:53:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:07,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:07,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:07,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468462554] [2021-12-28 05:53:07,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468462554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:07,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:07,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 05:53:07,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108832321] [2021-12-28 05:53:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:07,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 05:53:07,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 05:53:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:53:07,690 INFO L87 Difference]: Start difference. First operand 5814 states and 8127 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:08,172 INFO L93 Difference]: Finished difference Result 7519 states and 10686 transitions. [2021-12-28 05:53:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 05:53:08,173 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-28 05:53:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:08,187 INFO L225 Difference]: With dead ends: 7519 [2021-12-28 05:53:08,187 INFO L226 Difference]: Without dead ends: 7519 [2021-12-28 05:53:08,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-12-28 05:53:08,188 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 992 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:08,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 835 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:53:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7519 states. [2021-12-28 05:53:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7519 to 6287. [2021-12-28 05:53:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6287 states, 5962 states have (on average 1.3849379402884938) internal successors, (8257), 6077 states have internal predecessors, (8257), 272 states have call successors, (272), 16 states have call predecessors, (272), 16 states have return successors, (272), 193 states have call predecessors, (272), 272 states have call successors, (272) [2021-12-28 05:53:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6287 states to 6287 states and 8801 transitions. [2021-12-28 05:53:08,296 INFO L78 Accepts]: Start accepts. Automaton has 6287 states and 8801 transitions. Word has length 55 [2021-12-28 05:53:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:08,297 INFO L470 AbstractCegarLoop]: Abstraction has 6287 states and 8801 transitions. [2021-12-28 05:53:08,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 6287 states and 8801 transitions. [2021-12-28 05:53:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 05:53:08,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:08,298 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:08,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-28 05:53:08,299 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash 453056025, now seen corresponding path program 1 times [2021-12-28 05:53:08,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:08,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150350853] [2021-12-28 05:53:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:08,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 05:53:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 05:53:08,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:08,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150350853] [2021-12-28 05:53:08,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150350853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:08,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:08,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:53:08,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002258063] [2021-12-28 05:53:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:08,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:53:08,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:53:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:08,365 INFO L87 Difference]: Start difference. First operand 6287 states and 8801 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:53:08,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:08,403 INFO L93 Difference]: Finished difference Result 7344 states and 10187 transitions. [2021-12-28 05:53:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:53:08,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2021-12-28 05:53:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:08,416 INFO L225 Difference]: With dead ends: 7344 [2021-12-28 05:53:08,417 INFO L226 Difference]: Without dead ends: 7344 [2021-12-28 05:53:08,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:53:08,417 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 270 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:08,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 438 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:53:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7344 states. [2021-12-28 05:53:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7344 to 6286. [2021-12-28 05:53:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6286 states, 5962 states have (on average 1.3768869506876886) internal successors, (8209), 6076 states have internal predecessors, (8209), 272 states have call successors, (272), 16 states have call predecessors, (272), 16 states have return successors, (272), 193 states have call predecessors, (272), 272 states have call successors, (272) [2021-12-28 05:53:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6286 states to 6286 states and 8753 transitions. [2021-12-28 05:53:08,495 INFO L78 Accepts]: Start accepts. Automaton has 6286 states and 8753 transitions. Word has length 56 [2021-12-28 05:53:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:08,496 INFO L470 AbstractCegarLoop]: Abstraction has 6286 states and 8753 transitions. [2021-12-28 05:53:08,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:53:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6286 states and 8753 transitions. [2021-12-28 05:53:08,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 05:53:08,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:08,498 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:08,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-28 05:53:08,499 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:08,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1775377953, now seen corresponding path program 1 times [2021-12-28 05:53:08,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:08,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423626773] [2021-12-28 05:53:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:08,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:08,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 05:53:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:53:08,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:08,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423626773] [2021-12-28 05:53:08,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423626773] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:08,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043255760] [2021-12-28 05:53:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:08,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:08,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:08,864 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) [2021-12-28 05:53:08,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 05:53:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:08,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-28 05:53:09,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:09,070 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:53:09,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-28 05:53:09,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:53:09,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:53:09,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:09,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-28 05:53:09,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:09,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-28 05:53:09,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:53:09,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:53:09,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-28 05:53:09,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-28 05:53:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:09,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:53:09,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043255760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:09,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 05:53:09,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 24 [2021-12-28 05:53:09,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373373539] [2021-12-28 05:53:09,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:09,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:53:09,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:53:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-12-28 05:53:09,510 INFO L87 Difference]: Start difference. First operand 6286 states and 8753 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:53:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:10,102 INFO L93 Difference]: Finished difference Result 9036 states and 12596 transitions. [2021-12-28 05:53:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 05:53:10,103 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2021-12-28 05:53:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:10,113 INFO L225 Difference]: With dead ends: 9036 [2021-12-28 05:53:10,114 INFO L226 Difference]: Without dead ends: 9036 [2021-12-28 05:53:10,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2021-12-28 05:53:10,116 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 695 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:10,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 1111 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:53:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9036 states. [2021-12-28 05:53:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9036 to 6329. [2021-12-28 05:53:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6329 states, 6006 states have (on average 1.3734598734598735) internal successors, (8249), 6119 states have internal predecessors, (8249), 271 states have call successors, (271), 16 states have call predecessors, (271), 16 states have return successors, (271), 193 states have call predecessors, (271), 271 states have call successors, (271) [2021-12-28 05:53:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6329 states to 6329 states and 8791 transitions. [2021-12-28 05:53:10,224 INFO L78 Accepts]: Start accepts. Automaton has 6329 states and 8791 transitions. Word has length 56 [2021-12-28 05:53:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:10,225 INFO L470 AbstractCegarLoop]: Abstraction has 6329 states and 8791 transitions. [2021-12-28 05:53:10,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:53:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6329 states and 8791 transitions. [2021-12-28 05:53:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 05:53:10,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:10,226 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:10,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:10,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:10,447 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 840572766, now seen corresponding path program 1 times [2021-12-28 05:53:10,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:10,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373853526] [2021-12-28 05:53:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:10,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:10,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:10,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373853526] [2021-12-28 05:53:10,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373853526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:10,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:10,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 05:53:10,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385066085] [2021-12-28 05:53:10,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:10,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-28 05:53:10,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:10,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-28 05:53:10,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-28 05:53:10,974 INFO L87 Difference]: Start difference. First operand 6329 states and 8791 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:12,295 INFO L93 Difference]: Finished difference Result 9541 states and 13400 transitions. [2021-12-28 05:53:12,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-28 05:53:12,295 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-28 05:53:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:12,309 INFO L225 Difference]: With dead ends: 9541 [2021-12-28 05:53:12,309 INFO L226 Difference]: Without dead ends: 9541 [2021-12-28 05:53:12,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 05:53:12,310 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 1642 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:12,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 1536 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:53:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9541 states. [2021-12-28 05:53:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9541 to 7647. [2021-12-28 05:53:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7647 states, 7214 states have (on average 1.3635985583587469) internal successors, (9837), 7375 states have internal predecessors, (9837), 375 states have call successors, (375), 22 states have call predecessors, (375), 22 states have return successors, (375), 249 states have call predecessors, (375), 375 states have call successors, (375) [2021-12-28 05:53:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7647 states to 7647 states and 10587 transitions. [2021-12-28 05:53:12,446 INFO L78 Accepts]: Start accepts. Automaton has 7647 states and 10587 transitions. Word has length 56 [2021-12-28 05:53:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:12,446 INFO L470 AbstractCegarLoop]: Abstraction has 7647 states and 10587 transitions. [2021-12-28 05:53:12,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7647 states and 10587 transitions. [2021-12-28 05:53:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 05:53:12,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:12,448 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:12,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-28 05:53:12,448 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:12,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash 840572767, now seen corresponding path program 1 times [2021-12-28 05:53:12,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:12,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532537473] [2021-12-28 05:53:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:12,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:12,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:12,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532537473] [2021-12-28 05:53:12,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532537473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:12,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:12,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-28 05:53:12,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714736606] [2021-12-28 05:53:12,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:12,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 05:53:12,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:12,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 05:53:12,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-28 05:53:12,943 INFO L87 Difference]: Start difference. First operand 7647 states and 10587 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:14,080 INFO L93 Difference]: Finished difference Result 9352 states and 13122 transitions. [2021-12-28 05:53:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 05:53:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-28 05:53:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:14,094 INFO L225 Difference]: With dead ends: 9352 [2021-12-28 05:53:14,094 INFO L226 Difference]: Without dead ends: 9352 [2021-12-28 05:53:14,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2021-12-28 05:53:14,095 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 1541 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:14,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 1070 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:53:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2021-12-28 05:53:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 6622. [2021-12-28 05:53:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6622 states, 6276 states have (on average 1.369821542383684) internal successors, (8597), 6399 states have internal predecessors, (8597), 293 states have call successors, (293), 17 states have call predecessors, (293), 17 states have return successors, (293), 205 states have call predecessors, (293), 293 states have call successors, (293) [2021-12-28 05:53:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6622 states to 6622 states and 9183 transitions. [2021-12-28 05:53:14,188 INFO L78 Accepts]: Start accepts. Automaton has 6622 states and 9183 transitions. Word has length 56 [2021-12-28 05:53:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:14,188 INFO L470 AbstractCegarLoop]: Abstraction has 6622 states and 9183 transitions. [2021-12-28 05:53:14,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 6622 states and 9183 transitions. [2021-12-28 05:53:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 05:53:14,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:14,189 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:14,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-28 05:53:14,190 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:14,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:14,190 INFO L85 PathProgramCache]: Analyzing trace with hash 110361472, now seen corresponding path program 1 times [2021-12-28 05:53:14,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:14,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491482297] [2021-12-28 05:53:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:14,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:53:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:53:14,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:14,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491482297] [2021-12-28 05:53:14,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491482297] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:14,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366839510] [2021-12-28 05:53:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:14,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:14,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:14,521 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) [2021-12-28 05:53:14,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 05:53:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:14,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-28 05:53:14,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:14,760 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:53:15,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:53:15,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:15,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-28 05:53:15,300 INFO L353 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-28 05:53:15,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-28 05:53:15,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-28 05:53:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:15,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:53:15,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366839510] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:15,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:53:15,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2021-12-28 05:53:15,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715196303] [2021-12-28 05:53:15,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:53:15,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-28 05:53:15,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-28 05:53:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-12-28 05:53:15,495 INFO L87 Difference]: Start difference. First operand 6622 states and 9183 transitions. Second operand has 25 states, 24 states have (on average 4.375) internal successors, (105), 23 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:53:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:16,792 INFO L93 Difference]: Finished difference Result 15826 states and 22398 transitions. [2021-12-28 05:53:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-28 05:53:16,792 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.375) internal successors, (105), 23 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2021-12-28 05:53:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:16,812 INFO L225 Difference]: With dead ends: 15826 [2021-12-28 05:53:16,813 INFO L226 Difference]: Without dead ends: 15826 [2021-12-28 05:53:16,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=622, Invalid=2240, Unknown=0, NotChecked=0, Total=2862 [2021-12-28 05:53:16,813 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 3565 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3566 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:16,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3566 Valid, 1893 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 05:53:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15826 states. [2021-12-28 05:53:16,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15826 to 7874. [2021-12-28 05:53:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7874 states, 7441 states have (on average 1.363526407740895) internal successors, (10146), 7578 states have internal predecessors, (10146), 375 states have call successors, (375), 22 states have call predecessors, (375), 22 states have return successors, (375), 273 states have call predecessors, (375), 375 states have call successors, (375) [2021-12-28 05:53:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 10896 transitions. [2021-12-28 05:53:16,945 INFO L78 Accepts]: Start accepts. Automaton has 7874 states and 10896 transitions. Word has length 57 [2021-12-28 05:53:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:16,945 INFO L470 AbstractCegarLoop]: Abstraction has 7874 states and 10896 transitions. [2021-12-28 05:53:16,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.375) internal successors, (105), 23 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:53:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7874 states and 10896 transitions. [2021-12-28 05:53:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 05:53:16,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:16,947 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:16,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:17,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-12-28 05:53:17,162 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:17,162 INFO L85 PathProgramCache]: Analyzing trace with hash 110361473, now seen corresponding path program 1 times [2021-12-28 05:53:17,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:17,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226151498] [2021-12-28 05:53:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:17,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:53:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:53:17,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:17,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226151498] [2021-12-28 05:53:17,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226151498] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:17,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977020682] [2021-12-28 05:53:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:17,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:17,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:17,892 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) [2021-12-28 05:53:17,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 05:53:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:18,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 86 conjunts are in the unsatisfiable core [2021-12-28 05:53:18,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:18,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:53:18,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:53:18,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:53:18,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:53:18,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:18,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-28 05:53:18,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:18,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2021-12-28 05:53:18,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:18,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:53:18,896 INFO L353 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-28 05:53:18,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-28 05:53:19,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-28 05:53:19,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-28 05:53:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:19,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:53:19,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977020682] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:19,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:53:19,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 31 [2021-12-28 05:53:19,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587227723] [2021-12-28 05:53:19,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:53:19,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 05:53:19,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 05:53:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2021-12-28 05:53:19,288 INFO L87 Difference]: Start difference. First operand 7874 states and 10896 transitions. Second operand has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 28 states have internal predecessors, (106), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:53:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:21,045 INFO L93 Difference]: Finished difference Result 9715 states and 13603 transitions. [2021-12-28 05:53:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 05:53:21,045 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 28 states have internal predecessors, (106), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2021-12-28 05:53:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:21,054 INFO L225 Difference]: With dead ends: 9715 [2021-12-28 05:53:21,054 INFO L226 Difference]: Without dead ends: 9715 [2021-12-28 05:53:21,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=479, Invalid=2491, Unknown=0, NotChecked=0, Total=2970 [2021-12-28 05:53:21,055 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 2916 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:21,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 2102 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 05:53:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9715 states. [2021-12-28 05:53:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9715 to 7874. [2021-12-28 05:53:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7874 states, 7441 states have (on average 1.3601666442682434) internal successors, (10121), 7578 states have internal predecessors, (10121), 375 states have call successors, (375), 22 states have call predecessors, (375), 22 states have return successors, (375), 273 states have call predecessors, (375), 375 states have call successors, (375) [2021-12-28 05:53:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 10871 transitions. [2021-12-28 05:53:21,146 INFO L78 Accepts]: Start accepts. Automaton has 7874 states and 10871 transitions. Word has length 57 [2021-12-28 05:53:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:21,147 INFO L470 AbstractCegarLoop]: Abstraction has 7874 states and 10871 transitions. [2021-12-28 05:53:21,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 28 states have internal predecessors, (106), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:53:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7874 states and 10871 transitions. [2021-12-28 05:53:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 05:53:21,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:21,148 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:21,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:21,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:21,364 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:21,364 INFO L85 PathProgramCache]: Analyzing trace with hash 287950749, now seen corresponding path program 1 times [2021-12-28 05:53:21,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:21,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232178284] [2021-12-28 05:53:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:21,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:21,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:21,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:21,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232178284] [2021-12-28 05:53:21,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232178284] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:21,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868595251] [2021-12-28 05:53:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:21,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:21,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:21,408 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) [2021-12-28 05:53:21,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 05:53:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:21,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 05:53:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:21,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:53:21,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868595251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:21,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 05:53:21,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-12-28 05:53:21,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205428469] [2021-12-28 05:53:21,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:21,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:53:21,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:21,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:53:21,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:21,643 INFO L87 Difference]: Start difference. First operand 7874 states and 10871 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:21,694 INFO L93 Difference]: Finished difference Result 9093 states and 12467 transitions. [2021-12-28 05:53:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:53:21,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-12-28 05:53:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:21,706 INFO L225 Difference]: With dead ends: 9093 [2021-12-28 05:53:21,706 INFO L226 Difference]: Without dead ends: 9093 [2021-12-28 05:53:21,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:21,708 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 241 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:21,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 362 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:53:21,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9093 states. [2021-12-28 05:53:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9093 to 8618. [2021-12-28 05:53:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8618 states, 8159 states have (on average 1.3517587939698492) internal successors, (11029), 8296 states have internal predecessors, (11029), 401 states have call successors, (401), 22 states have call predecessors, (401), 22 states have return successors, (401), 299 states have call predecessors, (401), 401 states have call successors, (401) [2021-12-28 05:53:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8618 states to 8618 states and 11831 transitions. [2021-12-28 05:53:21,834 INFO L78 Accepts]: Start accepts. Automaton has 8618 states and 11831 transitions. Word has length 57 [2021-12-28 05:53:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:21,834 INFO L470 AbstractCegarLoop]: Abstraction has 8618 states and 11831 transitions. [2021-12-28 05:53:21,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8618 states and 11831 transitions. [2021-12-28 05:53:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 05:53:21,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:21,835 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:21,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:22,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-12-28 05:53:22,056 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1083931757, now seen corresponding path program 1 times [2021-12-28 05:53:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15875716] [2021-12-28 05:53:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:22,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 05:53:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:53:22,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:22,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15875716] [2021-12-28 05:53:22,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15875716] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:22,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631324165] [2021-12-28 05:53:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:22,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:22,579 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) [2021-12-28 05:53:22,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 05:53:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:22,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-28 05:53:22,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:23,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:53:23,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:23,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-12-28 05:53:23,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:23,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:23,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:23,314 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 05:53:23,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 64 [2021-12-28 05:53:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:23,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:53:23,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 106 [2021-12-28 05:53:23,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:23,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:53:23,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-12-28 05:53:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:53:24,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631324165] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:53:24,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 05:53:24,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 40 [2021-12-28 05:53:24,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011162650] [2021-12-28 05:53:24,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 05:53:24,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-28 05:53:24,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:24,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-28 05:53:24,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1433, Unknown=0, NotChecked=0, Total=1560 [2021-12-28 05:53:24,275 INFO L87 Difference]: Start difference. First operand 8618 states and 11831 transitions. Second operand has 40 states, 40 states have (on average 3.825) internal successors, (153), 40 states have internal predecessors, (153), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-28 05:53:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:26,968 INFO L93 Difference]: Finished difference Result 20915 states and 29556 transitions. [2021-12-28 05:53:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-28 05:53:26,969 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.825) internal successors, (153), 40 states have internal predecessors, (153), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 58 [2021-12-28 05:53:26,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:26,999 INFO L225 Difference]: With dead ends: 20915 [2021-12-28 05:53:27,000 INFO L226 Difference]: Without dead ends: 20901 [2021-12-28 05:53:27,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=937, Invalid=3893, Unknown=0, NotChecked=0, Total=4830 [2021-12-28 05:53:27,001 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 5610 mSDsluCounter, 4510 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5610 SdHoareTripleChecker+Valid, 4786 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:27,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5610 Valid, 4786 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 05:53:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20901 states. [2021-12-28 05:53:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20901 to 8618. [2021-12-28 05:53:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8618 states, 8159 states have (on average 1.3478367446991053) internal successors, (10997), 8296 states have internal predecessors, (10997), 401 states have call successors, (401), 22 states have call predecessors, (401), 22 states have return successors, (401), 299 states have call predecessors, (401), 401 states have call successors, (401) [2021-12-28 05:53:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8618 states to 8618 states and 11799 transitions. [2021-12-28 05:53:27,149 INFO L78 Accepts]: Start accepts. Automaton has 8618 states and 11799 transitions. Word has length 58 [2021-12-28 05:53:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:27,149 INFO L470 AbstractCegarLoop]: Abstraction has 8618 states and 11799 transitions. [2021-12-28 05:53:27,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.825) internal successors, (153), 40 states have internal predecessors, (153), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-28 05:53:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8618 states and 11799 transitions. [2021-12-28 05:53:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-28 05:53:27,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:27,151 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:27,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:27,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-12-28 05:53:27,365 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1844221281, now seen corresponding path program 1 times [2021-12-28 05:53:27,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:27,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400321633] [2021-12-28 05:53:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:27,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:27,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:27,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:27,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400321633] [2021-12-28 05:53:27,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400321633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:27,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:27,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-28 05:53:27,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594756911] [2021-12-28 05:53:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:27,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 05:53:27,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 05:53:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-28 05:53:27,789 INFO L87 Difference]: Start difference. First operand 8618 states and 11799 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:28,676 INFO L93 Difference]: Finished difference Result 9937 states and 13792 transitions. [2021-12-28 05:53:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 05:53:28,676 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-12-28 05:53:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:28,686 INFO L225 Difference]: With dead ends: 9937 [2021-12-28 05:53:28,686 INFO L226 Difference]: Without dead ends: 9937 [2021-12-28 05:53:28,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2021-12-28 05:53:28,687 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 1453 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:28,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 1191 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:53:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9937 states. [2021-12-28 05:53:28,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9937 to 8905. [2021-12-28 05:53:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8905 states, 8432 states have (on average 1.3478415559772297) internal successors, (11365), 8571 states have internal predecessors, (11365), 414 states have call successors, (414), 23 states have call predecessors, (414), 23 states have return successors, (414), 310 states have call predecessors, (414), 414 states have call successors, (414) [2021-12-28 05:53:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8905 states to 8905 states and 12193 transitions. [2021-12-28 05:53:28,784 INFO L78 Accepts]: Start accepts. Automaton has 8905 states and 12193 transitions. Word has length 59 [2021-12-28 05:53:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:28,784 INFO L470 AbstractCegarLoop]: Abstraction has 8905 states and 12193 transitions. [2021-12-28 05:53:28,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 8905 states and 12193 transitions. [2021-12-28 05:53:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-28 05:53:28,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:28,786 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:28,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-28 05:53:28,786 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:28,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:28,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1034874655, now seen corresponding path program 1 times [2021-12-28 05:53:28,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:28,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773124306] [2021-12-28 05:53:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:28,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:29,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:29,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773124306] [2021-12-28 05:53:29,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773124306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:29,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:29,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 05:53:29,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628988674] [2021-12-28 05:53:29,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:29,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 05:53:29,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 05:53:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:53:29,083 INFO L87 Difference]: Start difference. First operand 8905 states and 12193 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:29,549 INFO L93 Difference]: Finished difference Result 10964 states and 15193 transitions. [2021-12-28 05:53:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 05:53:29,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-12-28 05:53:29,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:29,560 INFO L225 Difference]: With dead ends: 10964 [2021-12-28 05:53:29,560 INFO L226 Difference]: Without dead ends: 10964 [2021-12-28 05:53:29,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-12-28 05:53:29,561 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 952 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:29,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 874 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:53:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2021-12-28 05:53:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 9533. [2021-12-28 05:53:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9533 states, 9033 states have (on average 1.356138602900476) internal successors, (12250), 9176 states have internal predecessors, (12250), 439 states have call successors, (439), 25 states have call predecessors, (439), 25 states have return successors, (439), 331 states have call predecessors, (439), 439 states have call successors, (439) [2021-12-28 05:53:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9533 states to 9533 states and 13128 transitions. [2021-12-28 05:53:29,696 INFO L78 Accepts]: Start accepts. Automaton has 9533 states and 13128 transitions. Word has length 59 [2021-12-28 05:53:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:29,696 INFO L470 AbstractCegarLoop]: Abstraction has 9533 states and 13128 transitions. [2021-12-28 05:53:29,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 9533 states and 13128 transitions. [2021-12-28 05:53:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-28 05:53:29,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:29,698 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:29,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-28 05:53:29,698 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2010992519, now seen corresponding path program 1 times [2021-12-28 05:53:29,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:29,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104186826] [2021-12-28 05:53:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:29,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 05:53:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 05:53:29,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:29,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104186826] [2021-12-28 05:53:29,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104186826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:29,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:29,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 05:53:29,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882441614] [2021-12-28 05:53:29,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:29,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:53:29,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:53:29,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:53:29,823 INFO L87 Difference]: Start difference. First operand 9533 states and 13128 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:53:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:29,998 INFO L93 Difference]: Finished difference Result 9615 states and 13160 transitions. [2021-12-28 05:53:29,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:53:29,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2021-12-28 05:53:30,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:30,014 INFO L225 Difference]: With dead ends: 9615 [2021-12-28 05:53:30,014 INFO L226 Difference]: Without dead ends: 9615 [2021-12-28 05:53:30,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:53:30,015 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 430 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:30,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 384 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:53:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9615 states. [2021-12-28 05:53:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9615 to 9531. [2021-12-28 05:53:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9531 states, 9033 states have (on average 1.3468393667663014) internal successors, (12166), 9174 states have internal predecessors, (12166), 439 states have call successors, (439), 25 states have call predecessors, (439), 25 states have return successors, (439), 331 states have call predecessors, (439), 439 states have call successors, (439) [2021-12-28 05:53:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9531 states to 9531 states and 13044 transitions. [2021-12-28 05:53:30,125 INFO L78 Accepts]: Start accepts. Automaton has 9531 states and 13044 transitions. Word has length 60 [2021-12-28 05:53:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:30,125 INFO L470 AbstractCegarLoop]: Abstraction has 9531 states and 13044 transitions. [2021-12-28 05:53:30,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:53:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9531 states and 13044 transitions. [2021-12-28 05:53:30,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-28 05:53:30,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:30,127 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:30,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-28 05:53:30,127 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:30,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:30,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1895327591, now seen corresponding path program 1 times [2021-12-28 05:53:30,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:30,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273604165] [2021-12-28 05:53:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:30,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:53:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 05:53:30,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:30,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273604165] [2021-12-28 05:53:30,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273604165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:30,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:30,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:53:30,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260467018] [2021-12-28 05:53:30,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:30,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:53:30,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:53:30,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:53:30,162 INFO L87 Difference]: Start difference. First operand 9531 states and 13044 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:30,186 INFO L93 Difference]: Finished difference Result 9531 states and 12990 transitions. [2021-12-28 05:53:30,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:53:30,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-12-28 05:53:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:30,199 INFO L225 Difference]: With dead ends: 9531 [2021-12-28 05:53:30,200 INFO L226 Difference]: Without dead ends: 9531 [2021-12-28 05:53:30,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:53:30,201 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:30,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 308 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:53:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9531 states. [2021-12-28 05:53:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9531 to 9531. [2021-12-28 05:53:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9531 states, 9033 states have (on average 1.3408612863943319) internal successors, (12112), 9174 states have internal predecessors, (12112), 439 states have call successors, (439), 25 states have call predecessors, (439), 25 states have return successors, (439), 331 states have call predecessors, (439), 439 states have call successors, (439) [2021-12-28 05:53:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9531 states to 9531 states and 12990 transitions. [2021-12-28 05:53:30,303 INFO L78 Accepts]: Start accepts. Automaton has 9531 states and 12990 transitions. Word has length 60 [2021-12-28 05:53:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:30,304 INFO L470 AbstractCegarLoop]: Abstraction has 9531 states and 12990 transitions. [2021-12-28 05:53:30,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 9531 states and 12990 transitions. [2021-12-28 05:53:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 05:53:30,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:30,306 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:53:30,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-28 05:53:30,306 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash -25117949, now seen corresponding path program 1 times [2021-12-28 05:53:30,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:30,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833100605] [2021-12-28 05:53:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:30,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:30,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:30,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:30,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833100605] [2021-12-28 05:53:30,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833100605] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:30,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769777450] [2021-12-28 05:53:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:30,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:30,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:30,352 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) [2021-12-28 05:53:30,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 05:53:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:30,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:53:30,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:30,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:53:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:30,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769777450] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:53:30,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 05:53:30,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2021-12-28 05:53:30,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597209071] [2021-12-28 05:53:30,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 05:53:30,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:53:30,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:53:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:30,724 INFO L87 Difference]: Start difference. First operand 9531 states and 12990 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:53:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:30,800 INFO L93 Difference]: Finished difference Result 21124 states and 28459 transitions. [2021-12-28 05:53:30,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:53:30,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2021-12-28 05:53:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:30,826 INFO L225 Difference]: With dead ends: 21124 [2021-12-28 05:53:30,826 INFO L226 Difference]: Without dead ends: 21124 [2021-12-28 05:53:30,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:53:30,826 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 358 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:30,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 838 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:53:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21124 states. [2021-12-28 05:53:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21124 to 15627. [2021-12-28 05:53:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15627 states, 14841 states have (on average 1.3247085775891112) internal successors, (19660), 15010 states have internal predecessors, (19660), 727 states have call successors, (727), 25 states have call predecessors, (727), 25 states have return successors, (727), 591 states have call predecessors, (727), 727 states have call successors, (727) [2021-12-28 05:53:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15627 states to 15627 states and 21114 transitions. [2021-12-28 05:53:30,995 INFO L78 Accepts]: Start accepts. Automaton has 15627 states and 21114 transitions. Word has length 62 [2021-12-28 05:53:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:30,996 INFO L470 AbstractCegarLoop]: Abstraction has 15627 states and 21114 transitions. [2021-12-28 05:53:30,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:53:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 15627 states and 21114 transitions. [2021-12-28 05:53:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 05:53:30,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:30,997 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:31,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 05:53:31,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:31,223 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash 279048111, now seen corresponding path program 1 times [2021-12-28 05:53:31,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371215750] [2021-12-28 05:53:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:31,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:31,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:53:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 05:53:31,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:31,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371215750] [2021-12-28 05:53:31,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371215750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:31,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:31,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:53:31,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601098819] [2021-12-28 05:53:31,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:31,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:53:31,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:53:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:53:31,261 INFO L87 Difference]: Start difference. First operand 15627 states and 21114 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:31,341 INFO L93 Difference]: Finished difference Result 31592 states and 42826 transitions. [2021-12-28 05:53:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:53:31,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-12-28 05:53:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:31,393 INFO L225 Difference]: With dead ends: 31592 [2021-12-28 05:53:31,393 INFO L226 Difference]: Without dead ends: 31592 [2021-12-28 05:53:31,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:53:31,394 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 277 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:31,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 746 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:53:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31592 states. [2021-12-28 05:53:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31592 to 15713. [2021-12-28 05:53:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15713 states, 14927 states have (on average 1.3241776646345549) internal successors, (19766), 15096 states have internal predecessors, (19766), 727 states have call successors, (727), 25 states have call predecessors, (727), 25 states have return successors, (727), 591 states have call predecessors, (727), 727 states have call successors, (727) [2021-12-28 05:53:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15713 states to 15713 states and 21220 transitions. [2021-12-28 05:53:31,801 INFO L78 Accepts]: Start accepts. Automaton has 15713 states and 21220 transitions. Word has length 63 [2021-12-28 05:53:31,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:31,802 INFO L470 AbstractCegarLoop]: Abstraction has 15713 states and 21220 transitions. [2021-12-28 05:53:31,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 15713 states and 21220 transitions. [2021-12-28 05:53:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 05:53:31,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:31,804 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:31,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-28 05:53:31,804 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:31,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash 279048173, now seen corresponding path program 1 times [2021-12-28 05:53:31,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:31,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339405044] [2021-12-28 05:53:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:31,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:53:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 05:53:31,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:31,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339405044] [2021-12-28 05:53:31,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339405044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:31,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:31,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:53:31,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819425793] [2021-12-28 05:53:31,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:31,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:53:31,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:53:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:53:31,857 INFO L87 Difference]: Start difference. First operand 15713 states and 21220 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:32,058 INFO L93 Difference]: Finished difference Result 17345 states and 23519 transitions. [2021-12-28 05:53:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:53:32,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-12-28 05:53:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:32,076 INFO L225 Difference]: With dead ends: 17345 [2021-12-28 05:53:32,076 INFO L226 Difference]: Without dead ends: 17345 [2021-12-28 05:53:32,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:53:32,077 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 140 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:32,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 627 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:53:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17345 states. [2021-12-28 05:53:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17345 to 15713. [2021-12-28 05:53:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15713 states, 14927 states have (on average 1.321966905607289) internal successors, (19733), 15096 states have internal predecessors, (19733), 727 states have call successors, (727), 25 states have call predecessors, (727), 25 states have return successors, (727), 591 states have call predecessors, (727), 727 states have call successors, (727) [2021-12-28 05:53:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15713 states to 15713 states and 21187 transitions. [2021-12-28 05:53:32,249 INFO L78 Accepts]: Start accepts. Automaton has 15713 states and 21187 transitions. Word has length 63 [2021-12-28 05:53:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:32,249 INFO L470 AbstractCegarLoop]: Abstraction has 15713 states and 21187 transitions. [2021-12-28 05:53:32,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 15713 states and 21187 transitions. [2021-12-28 05:53:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 05:53:32,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:32,250 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:32,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-28 05:53:32,250 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash 279048174, now seen corresponding path program 1 times [2021-12-28 05:53:32,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:32,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406216193] [2021-12-28 05:53:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:32,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:32,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:53:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 05:53:32,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:32,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406216193] [2021-12-28 05:53:32,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406216193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:53:32,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:53:32,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:53:32,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465623067] [2021-12-28 05:53:32,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:53:32,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:53:32,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:53:32,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:53:32,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:53:32,317 INFO L87 Difference]: Start difference. First operand 15713 states and 21187 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:53:32,491 INFO L93 Difference]: Finished difference Result 15709 states and 20873 transitions. [2021-12-28 05:53:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:53:32,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-12-28 05:53:32,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:53:32,508 INFO L225 Difference]: With dead ends: 15709 [2021-12-28 05:53:32,508 INFO L226 Difference]: Without dead ends: 15709 [2021-12-28 05:53:32,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:53:32,509 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 144 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:53:32,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 582 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:53:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15709 states. [2021-12-28 05:53:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15709 to 15709. [2021-12-28 05:53:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15709 states, 14927 states have (on average 1.3009311984993637) internal successors, (19419), 15092 states have internal predecessors, (19419), 727 states have call successors, (727), 25 states have call predecessors, (727), 25 states have return successors, (727), 591 states have call predecessors, (727), 727 states have call successors, (727) [2021-12-28 05:53:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15709 states to 15709 states and 20873 transitions. [2021-12-28 05:53:32,742 INFO L78 Accepts]: Start accepts. Automaton has 15709 states and 20873 transitions. Word has length 63 [2021-12-28 05:53:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:53:32,742 INFO L470 AbstractCegarLoop]: Abstraction has 15709 states and 20873 transitions. [2021-12-28 05:53:32,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:53:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 15709 states and 20873 transitions. [2021-12-28 05:53:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 05:53:32,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:53:32,743 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:53:32,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-28 05:53:32,744 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:53:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:53:32,744 INFO L85 PathProgramCache]: Analyzing trace with hash -778657640, now seen corresponding path program 1 times [2021-12-28 05:53:32,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:53:32,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708145037] [2021-12-28 05:53:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:32,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:53:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:53:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:33,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:53:33,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708145037] [2021-12-28 05:53:33,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708145037] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:53:33,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265522496] [2021-12-28 05:53:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:53:33,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:53:33,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:53:33,052 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) [2021-12-28 05:53:33,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 05:53:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:53:33,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-28 05:53:33,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:53:33,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:53:33,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:53:33,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2021-12-28 05:53:33,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2021-12-28 05:53:33,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 05:53:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:53:33,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:53:34,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 142