./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0232-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b 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/memsafety/test-0232-3.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 01db24b1589b54f78ea9acc56548e9023dc94ca9b67a9629bccf00110df292f7 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:36:53,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:36:53,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:36:53,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:36:53,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:36:53,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:36:53,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:36:53,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:36:53,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:36:53,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:36:53,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:36:53,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:36:53,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:36:53,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:36:53,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:36:53,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:36:53,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:36:53,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:36:53,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:36:53,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:36:53,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:36:53,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:36:53,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:36:53,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:36:53,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:36:53,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:36:53,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:36:53,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:36:53,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:36:53,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:36:53,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:36:53,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:36:53,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:36:53,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:36:53,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:36:53,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:36:53,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:36:53,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:36:53,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:36:53,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:36:53,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:36:53,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-14 19:36:53,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:36:53,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:36:53,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:36:53,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:36:53,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:36:53,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:36:53,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:36:53,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:36:53,513 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:36:53,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:36:53,513 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 19:36:53,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 19:36:53,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:36:53,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 19:36:53,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:36:53,514 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 19:36:53,514 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 19:36:53,514 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 19:36:53,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:36:53,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 19:36:53,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 19:36:53,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:36:53,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:36:53,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:36:53,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:36:53,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:36:53,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:36:53,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:36:53,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 19:36:53,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 19:36:53,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:36:53,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01db24b1589b54f78ea9acc56548e9023dc94ca9b67a9629bccf00110df292f7 [2021-12-14 19:36:53,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:36:53,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:36:53,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:36:53,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:36:53,743 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:36:53,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0232-3.i [2021-12-14 19:36:53,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7505d2b3/1dde8f01ba5142d7b7b3f20c3c0a2105/FLAG3a0efb6e4 [2021-12-14 19:36:54,227 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:36:54,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0232-3.i [2021-12-14 19:36:54,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7505d2b3/1dde8f01ba5142d7b7b3f20c3c0a2105/FLAG3a0efb6e4 [2021-12-14 19:36:54,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7505d2b3/1dde8f01ba5142d7b7b3f20c3c0a2105 [2021-12-14 19:36:54,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:36:54,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:36:54,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:36:54,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:36:54,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:36:54,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520c0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54, skipping insertion in model container [2021-12-14 19:36:54,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:36:54,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:36:54,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:36:54,834 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 19:36:54,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:36:54,901 INFO L208 MainTranslator]: Completed translation [2021-12-14 19:36:54,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54 WrapperNode [2021-12-14 19:36:54,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:36:54,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 19:36:54,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 19:36:54,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 19:36:54,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,951 INFO L137 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2021-12-14 19:36:54,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 19:36:54,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 19:36:54,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 19:36:54,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 19:36:54,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 19:36:54,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 19:36:54,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 19:36:54,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 19:36:54,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (1/1) ... [2021-12-14 19:36:54,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:36:54,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:36:55,007 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) [2021-12-14 19:36:55,010 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 [2021-12-14 19:36:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 19:36:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 19:36:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 19:36:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 19:36:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 19:36:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 19:36:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 19:36:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 19:36:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 19:36:55,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 19:36:55,149 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 19:36:55,164 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 19:36:55,396 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 19:36:55,402 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 19:36:55,402 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 19:36:55,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:36:55 BoogieIcfgContainer [2021-12-14 19:36:55,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 19:36:55,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 19:36:55,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 19:36:55,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 19:36:55,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:36:54" (1/3) ... [2021-12-14 19:36:55,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d68ceaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:36:55, skipping insertion in model container [2021-12-14 19:36:55,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:36:54" (2/3) ... [2021-12-14 19:36:55,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d68ceaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:36:55, skipping insertion in model container [2021-12-14 19:36:55,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:36:55" (3/3) ... [2021-12-14 19:36:55,411 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0232-3.i [2021-12-14 19:36:55,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 19:36:55,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-12-14 19:36:55,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 19:36:55,454 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 [2021-12-14 19:36:55,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-12-14 19:36:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 51 states have (on average 2.215686274509804) internal successors, (113), 106 states have internal predecessors, (113), 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) [2021-12-14 19:36:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-14 19:36:55,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:55,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-14 19:36:55,473 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:55,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2021-12-14 19:36:55,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:55,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782852886] [2021-12-14 19:36:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:55,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:55,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:55,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782852886] [2021-12-14 19:36:55,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782852886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:55,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:55,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:36:55,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104255384] [2021-12-14 19:36:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:55,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:36:55,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:55,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:36:55,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:36:55,699 INFO L87 Difference]: Start difference. First operand has 107 states, 51 states have (on average 2.215686274509804) internal successors, (113), 106 states have internal predecessors, (113), 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-14 19:36:55,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:55,886 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-12-14 19:36:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 19:36:55,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2021-12-14 19:36:55,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:55,898 INFO L225 Difference]: With dead ends: 132 [2021-12-14 19:36:55,898 INFO L226 Difference]: Without dead ends: 130 [2021-12-14 19:36:55,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:36:55,904 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 185 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:55,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 81 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:55,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-14 19:36:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2021-12-14 19:36:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 51 states have (on average 2.019607843137255) internal successors, (103), 97 states have internal predecessors, (103), 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) [2021-12-14 19:36:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2021-12-14 19:36:55,948 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 4 [2021-12-14 19:36:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:55,948 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2021-12-14 19:36:55,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-14 19:36:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2021-12-14 19:36:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-14 19:36:55,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:55,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-14 19:36:55,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 19:36:55,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:55,953 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2021-12-14 19:36:55,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:55,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685283918] [2021-12-14 19:36:55,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:55,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:56,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:56,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685283918] [2021-12-14 19:36:56,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685283918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:56,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:56,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:36:56,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097993222] [2021-12-14 19:36:56,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:56,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:36:56,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:56,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:36:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:36:56,088 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-14 19:36:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:56,230 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2021-12-14 19:36:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:36:56,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2021-12-14 19:36:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:56,234 INFO L225 Difference]: With dead ends: 120 [2021-12-14 19:36:56,234 INFO L226 Difference]: Without dead ends: 120 [2021-12-14 19:36:56,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:36:56,239 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 183 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:56,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 58 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-14 19:36:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2021-12-14 19:36:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 59 states have (on average 1.8644067796610169) internal successors, (110), 100 states have internal predecessors, (110), 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) [2021-12-14 19:36:56,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-12-14 19:36:56,251 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 4 [2021-12-14 19:36:56,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:56,251 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-12-14 19:36:56,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-14 19:36:56,252 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-12-14 19:36:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-14 19:36:56,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:56,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-14 19:36:56,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 19:36:56,256 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:56,257 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2021-12-14 19:36:56,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:56,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400063677] [2021-12-14 19:36:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:56,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:56,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:56,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400063677] [2021-12-14 19:36:56,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400063677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:56,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:56,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:36:56,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644082008] [2021-12-14 19:36:56,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:56,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:36:56,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:56,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:36:56,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:56,294 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-14 19:36:56,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:56,373 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2021-12-14 19:36:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:36:56,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-14 19:36:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:56,374 INFO L225 Difference]: With dead ends: 116 [2021-12-14 19:36:56,374 INFO L226 Difference]: Without dead ends: 116 [2021-12-14 19:36:56,375 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 [2021-12-14 19:36:56,380 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 62 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:56,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 83 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-14 19:36:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2021-12-14 19:36:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 96 states have internal predecessors, (106), 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) [2021-12-14 19:36:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-12-14 19:36:56,396 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 5 [2021-12-14 19:36:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:56,397 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-12-14 19:36:56,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-14 19:36:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-12-14 19:36:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-14 19:36:56,397 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:56,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-14 19:36:56,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 19:36:56,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:56,399 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2021-12-14 19:36:56,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:56,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637218669] [2021-12-14 19:36:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:56,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:56,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:56,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637218669] [2021-12-14 19:36:56,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637218669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:56,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:56,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:36:56,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371054372] [2021-12-14 19:36:56,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:56,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:36:56,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:56,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:36:56,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:36:56,456 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-14 19:36:56,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:56,505 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2021-12-14 19:36:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:36:56,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-14 19:36:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:56,506 INFO L225 Difference]: With dead ends: 94 [2021-12-14 19:36:56,508 INFO L226 Difference]: Without dead ends: 94 [2021-12-14 19:36:56,508 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 [2021-12-14 19:36:56,514 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:56,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 54 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:36:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-14 19:36:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-12-14 19:36:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.728813559322034) internal successors, (102), 92 states have internal predecessors, (102), 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) [2021-12-14 19:36:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2021-12-14 19:36:56,521 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 5 [2021-12-14 19:36:56,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:56,521 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2021-12-14 19:36:56,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-14 19:36:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2021-12-14 19:36:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-14 19:36:56,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:56,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:36:56,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 19:36:56,523 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:56,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1328641136, now seen corresponding path program 1 times [2021-12-14 19:36:56,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:56,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207712778] [2021-12-14 19:36:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:56,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:56,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:56,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207712778] [2021-12-14 19:36:56,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207712778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:56,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:56,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 19:36:56,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810225944] [2021-12-14 19:36:56,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:56,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 19:36:56,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 19:36:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:36:56,628 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-12-14 19:36:56,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:56,813 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-12-14 19:36:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 19:36:56,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2021-12-14 19:36:56,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:56,814 INFO L225 Difference]: With dead ends: 104 [2021-12-14 19:36:56,815 INFO L226 Difference]: Without dead ends: 104 [2021-12-14 19:36:56,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-14 19:36:56,816 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 14 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:56,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 424 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-14 19:36:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2021-12-14 19:36:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 98 states have internal predecessors, (108), 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) [2021-12-14 19:36:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2021-12-14 19:36:56,819 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 10 [2021-12-14 19:36:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:56,820 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2021-12-14 19:36:56,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-12-14 19:36:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2021-12-14 19:36:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 19:36:56,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:56,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:36:56,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 19:36:56,821 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015976, now seen corresponding path program 1 times [2021-12-14 19:36:56,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:56,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13032513] [2021-12-14 19:36:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:56,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:56,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:56,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13032513] [2021-12-14 19:36:56,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13032513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:56,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:56,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:36:56,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847418935] [2021-12-14 19:36:56,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:56,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 19:36:56,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:56,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 19:36:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:36:56,893 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-12-14 19:36:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:57,036 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2021-12-14 19:36:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:36:57,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-12-14 19:36:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:57,037 INFO L225 Difference]: With dead ends: 116 [2021-12-14 19:36:57,037 INFO L226 Difference]: Without dead ends: 116 [2021-12-14 19:36:57,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 19:36:57,038 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 200 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:57,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 122 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-14 19:36:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2021-12-14 19:36:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 65 states have (on average 1.646153846153846) internal successors, (107), 97 states have internal predecessors, (107), 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) [2021-12-14 19:36:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2021-12-14 19:36:57,041 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 18 [2021-12-14 19:36:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:57,042 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2021-12-14 19:36:57,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-12-14 19:36:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2021-12-14 19:36:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 19:36:57,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:57,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:36:57,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 19:36:57,043 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:57,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015977, now seen corresponding path program 1 times [2021-12-14 19:36:57,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:57,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521285904] [2021-12-14 19:36:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:57,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:57,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:57,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521285904] [2021-12-14 19:36:57,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521285904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:57,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:57,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:36:57,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653457769] [2021-12-14 19:36:57,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:57,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 19:36:57,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:57,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 19:36:57,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:36:57,175 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-12-14 19:36:57,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:57,294 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2021-12-14 19:36:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:36:57,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-12-14 19:36:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:57,295 INFO L225 Difference]: With dead ends: 121 [2021-12-14 19:36:57,296 INFO L226 Difference]: Without dead ends: 121 [2021-12-14 19:36:57,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 19:36:57,296 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 273 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:57,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 119 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-14 19:36:57,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2021-12-14 19:36:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 96 states have internal predecessors, (106), 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) [2021-12-14 19:36:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-12-14 19:36:57,300 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 18 [2021-12-14 19:36:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:57,300 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-12-14 19:36:57,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-12-14 19:36:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-12-14 19:36:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 19:36:57,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:57,301 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] [2021-12-14 19:36:57,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 19:36:57,302 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1257147052, now seen corresponding path program 1 times [2021-12-14 19:36:57,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:57,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74156614] [2021-12-14 19:36:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:57,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:57,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:57,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74156614] [2021-12-14 19:36:57,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74156614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:57,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:57,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:36:57,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650345692] [2021-12-14 19:36:57,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:57,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:36:57,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:36:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:36:57,349 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-12-14 19:36:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:57,428 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2021-12-14 19:36:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:36:57,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-12-14 19:36:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:57,429 INFO L225 Difference]: With dead ends: 89 [2021-12-14 19:36:57,429 INFO L226 Difference]: Without dead ends: 89 [2021-12-14 19:36:57,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:36:57,430 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 98 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:57,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 139 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-14 19:36:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-14 19:36:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.631578947368421) internal successors, (93), 88 states have internal predecessors, (93), 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) [2021-12-14 19:36:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2021-12-14 19:36:57,433 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 20 [2021-12-14 19:36:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:57,433 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2021-12-14 19:36:57,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-12-14 19:36:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2021-12-14 19:36:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 19:36:57,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:57,434 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] [2021-12-14 19:36:57,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 19:36:57,434 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:57,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash -663319494, now seen corresponding path program 1 times [2021-12-14 19:36:57,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:57,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751522663] [2021-12-14 19:36:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:57,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:57,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:57,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751522663] [2021-12-14 19:36:57,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751522663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:57,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:57,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:36:57,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543649631] [2021-12-14 19:36:57,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:57,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:36:57,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:57,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:36:57,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:36:57,505 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-12-14 19:36:57,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:57,598 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-12-14 19:36:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:36:57,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2021-12-14 19:36:57,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:57,601 INFO L225 Difference]: With dead ends: 88 [2021-12-14 19:36:57,602 INFO L226 Difference]: Without dead ends: 88 [2021-12-14 19:36:57,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:36:57,604 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 16 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:57,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 189 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-14 19:36:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-12-14 19:36:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 87 states have internal predecessors, (92), 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) [2021-12-14 19:36:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2021-12-14 19:36:57,607 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 21 [2021-12-14 19:36:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:57,607 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2021-12-14 19:36:57,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-12-14 19:36:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2021-12-14 19:36:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 19:36:57,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:57,608 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] [2021-12-14 19:36:57,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 19:36:57,609 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash -663319493, now seen corresponding path program 1 times [2021-12-14 19:36:57,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:57,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952009525] [2021-12-14 19:36:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:57,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:57,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:57,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952009525] [2021-12-14 19:36:57,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952009525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:57,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:57,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 19:36:57,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068598190] [2021-12-14 19:36:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:57,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 19:36:57,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 19:36:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 19:36:57,752 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-12-14 19:36:57,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:57,902 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2021-12-14 19:36:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:36:57,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 21 [2021-12-14 19:36:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:57,903 INFO L225 Difference]: With dead ends: 87 [2021-12-14 19:36:57,903 INFO L226 Difference]: Without dead ends: 87 [2021-12-14 19:36:57,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-14 19:36:57,904 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 203 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:57,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 152 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:36:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-14 19:36:57,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-12-14 19:36:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 86 states have internal predecessors, (91), 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) [2021-12-14 19:36:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-12-14 19:36:57,907 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 21 [2021-12-14 19:36:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:57,907 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-12-14 19:36:57,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-12-14 19:36:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-12-14 19:36:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 19:36:57,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:57,908 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] [2021-12-14 19:36:57,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 19:36:57,908 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash 911932203, now seen corresponding path program 1 times [2021-12-14 19:36:57,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:57,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702868215] [2021-12-14 19:36:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:57,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:58,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:58,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702868215] [2021-12-14 19:36:58,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702868215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:36:58,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:36:58,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 19:36:58,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121686427] [2021-12-14 19:36:58,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:36:58,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 19:36:58,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:58,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 19:36:58,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-14 19:36:58,057 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-12-14 19:36:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:36:58,499 INFO L93 Difference]: Finished difference Result 169 states and 176 transitions. [2021-12-14 19:36:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-14 19:36:58,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 22 [2021-12-14 19:36:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:36:58,502 INFO L225 Difference]: With dead ends: 169 [2021-12-14 19:36:58,502 INFO L226 Difference]: Without dead ends: 169 [2021-12-14 19:36:58,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-12-14 19:36:58,504 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 358 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 19:36:58,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 233 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 19:36:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-14 19:36:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 101. [2021-12-14 19:36:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 100 states have internal predecessors, (106), 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) [2021-12-14 19:36:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2021-12-14 19:36:58,510 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 22 [2021-12-14 19:36:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:36:58,510 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2021-12-14 19:36:58,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-12-14 19:36:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2021-12-14 19:36:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 19:36:58,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:36:58,512 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:36:58,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 19:36:58,513 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:36:58,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:36:58,513 INFO L85 PathProgramCache]: Analyzing trace with hash -428723026, now seen corresponding path program 1 times [2021-12-14 19:36:58,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:36:58,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261900502] [2021-12-14 19:36:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:58,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:36:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:58,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:36:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261900502] [2021-12-14 19:36:58,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261900502] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:36:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294701028] [2021-12-14 19:36:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:36:58,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:36:58,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:36:58,624 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) [2021-12-14 19:36:58,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 19:36:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:36:58,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-14 19:36:58,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:36:58,938 INFO L388 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 11 treesize of output 7 [2021-12-14 19:36:59,004 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-14 19:36:59,004 INFO L388 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 [2021-12-14 19:36:59,079 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-14 19:36:59,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-12-14 19:36:59,155 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-14 19:36:59,156 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-14 19:36:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:59,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:36:59,294 INFO L388 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 38 treesize of output 34 [2021-12-14 19:36:59,687 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-14 19:36:59,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 72 [2021-12-14 19:36:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:36:59,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294701028] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 19:36:59,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 19:36:59,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2021-12-14 19:36:59,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706275728] [2021-12-14 19:36:59,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 19:36:59,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-14 19:36:59,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:36:59,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-14 19:36:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-12-14 19:36:59,752 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 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) [2021-12-14 19:37:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:00,273 INFO L93 Difference]: Finished difference Result 233 states and 247 transitions. [2021-12-14 19:37:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 19:37:00,274 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 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 22 [2021-12-14 19:37:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:00,275 INFO L225 Difference]: With dead ends: 233 [2021-12-14 19:37:00,275 INFO L226 Difference]: Without dead ends: 233 [2021-12-14 19:37:00,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-12-14 19:37:00,276 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 349 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:00,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 577 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 617 Invalid, 0 Unknown, 225 Unchecked, 0.4s Time] [2021-12-14 19:37:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-12-14 19:37:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 109. [2021-12-14 19:37:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.4683544303797469) internal successors, (116), 108 states have internal predecessors, (116), 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) [2021-12-14 19:37:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2021-12-14 19:37:00,278 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 22 [2021-12-14 19:37:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:00,279 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2021-12-14 19:37:00,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 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) [2021-12-14 19:37:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2021-12-14 19:37:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 19:37:00,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:00,279 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:37:00,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 19:37:00,491 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,SelfDestructingSolverStorable11 [2021-12-14 19:37:00,492 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash -428723025, now seen corresponding path program 1 times [2021-12-14 19:37:00,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:00,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609367767] [2021-12-14 19:37:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:00,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:00,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:00,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609367767] [2021-12-14 19:37:00,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609367767] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:37:00,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150097381] [2021-12-14 19:37:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:00,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:37:00,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:37:00,632 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) [2021-12-14 19:37:00,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 19:37:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:00,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-14 19:37:00,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:37:00,866 INFO L388 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 11 treesize of output 7 [2021-12-14 19:37:00,873 INFO L388 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 11 treesize of output 7 [2021-12-14 19:37:00,937 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-14 19:37:00,938 INFO L388 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 15 treesize of output 15 [2021-12-14 19:37:00,942 INFO L388 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 16 treesize of output 18 [2021-12-14 19:37:01,010 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-14 19:37:01,010 INFO L388 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 1 case distinctions, treesize of input 23 treesize of output 18 [2021-12-14 19:37:01,022 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-14 19:37:01,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-12-14 19:37:01,127 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-14 19:37:01,127 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-14 19:37:01,133 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-14 19:37:01,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-12-14 19:37:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:01,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:37:01,401 INFO L388 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 84 treesize of output 80 [2021-12-14 19:37:01,404 INFO L388 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 135 treesize of output 123 [2021-12-14 19:37:01,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 19:37:01,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 23 [2021-12-14 19:37:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:01,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150097381] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 19:37:01,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 19:37:01,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 22 [2021-12-14 19:37:01,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592716755] [2021-12-14 19:37:01,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 19:37:01,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-14 19:37:01,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-14 19:37:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-12-14 19:37:01,584 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 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) [2021-12-14 19:37:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:02,423 INFO L93 Difference]: Finished difference Result 266 states and 281 transitions. [2021-12-14 19:37:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-14 19:37:02,424 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 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 22 [2021-12-14 19:37:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:02,425 INFO L225 Difference]: With dead ends: 266 [2021-12-14 19:37:02,425 INFO L226 Difference]: Without dead ends: 266 [2021-12-14 19:37:02,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2021-12-14 19:37:02,426 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 390 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:02,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 902 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 794 Invalid, 0 Unknown, 287 Unchecked, 0.4s Time] [2021-12-14 19:37:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-14 19:37:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 109. [2021-12-14 19:37:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 108 states have internal predecessors, (115), 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) [2021-12-14 19:37:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions. [2021-12-14 19:37:02,429 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 22 [2021-12-14 19:37:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:02,429 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 115 transitions. [2021-12-14 19:37:02,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 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) [2021-12-14 19:37:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2021-12-14 19:37:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-14 19:37:02,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:02,429 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] [2021-12-14 19:37:02,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 19:37:02,639 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,SelfDestructingSolverStorable12 [2021-12-14 19:37:02,640 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:02,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1794872678, now seen corresponding path program 1 times [2021-12-14 19:37:02,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:02,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867349511] [2021-12-14 19:37:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:02,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:02,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:02,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867349511] [2021-12-14 19:37:02,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867349511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:02,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:02,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 19:37:02,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856993581] [2021-12-14 19:37:02,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:02,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 19:37:02,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 19:37:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-14 19:37:02,803 INFO L87 Difference]: Start difference. First operand 109 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-12-14 19:37:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:03,276 INFO L93 Difference]: Finished difference Result 166 states and 173 transitions. [2021-12-14 19:37:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-14 19:37:03,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2021-12-14 19:37:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:03,277 INFO L225 Difference]: With dead ends: 166 [2021-12-14 19:37:03,277 INFO L226 Difference]: Without dead ends: 166 [2021-12-14 19:37:03,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-12-14 19:37:03,278 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 286 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:03,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 184 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 19:37:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-14 19:37:03,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 110. [2021-12-14 19:37:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 80 states have (on average 1.45) internal successors, (116), 109 states have internal predecessors, (116), 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) [2021-12-14 19:37:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2021-12-14 19:37:03,280 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 23 [2021-12-14 19:37:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:03,281 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2021-12-14 19:37:03,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) [2021-12-14 19:37:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2021-12-14 19:37:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 19:37:03,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:03,282 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] [2021-12-14 19:37:03,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 19:37:03,282 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash 193521933, now seen corresponding path program 1 times [2021-12-14 19:37:03,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:03,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542822936] [2021-12-14 19:37:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:03,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:03,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:03,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542822936] [2021-12-14 19:37:03,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542822936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:03,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:03,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 19:37:03,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140709657] [2021-12-14 19:37:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:03,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 19:37:03,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 19:37:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-14 19:37:03,415 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 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) [2021-12-14 19:37:03,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:03,773 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-12-14 19:37:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 19:37:03,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 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 24 [2021-12-14 19:37:03,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:03,774 INFO L225 Difference]: With dead ends: 117 [2021-12-14 19:37:03,774 INFO L226 Difference]: Without dead ends: 117 [2021-12-14 19:37:03,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-12-14 19:37:03,775 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 204 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:03,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 221 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 19:37:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-14 19:37:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2021-12-14 19:37:03,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 110 states have internal predecessors, (117), 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) [2021-12-14 19:37:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 117 transitions. [2021-12-14 19:37:03,778 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 117 transitions. Word has length 24 [2021-12-14 19:37:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:03,778 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 117 transitions. [2021-12-14 19:37:03,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 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) [2021-12-14 19:37:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 117 transitions. [2021-12-14 19:37:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-14 19:37:03,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:03,779 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] [2021-12-14 19:37:03,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 19:37:03,779 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1704212733, now seen corresponding path program 1 times [2021-12-14 19:37:03,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:03,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486188692] [2021-12-14 19:37:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:03,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:03,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:03,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486188692] [2021-12-14 19:37:03,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486188692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:03,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:03,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 19:37:03,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222784369] [2021-12-14 19:37:03,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:03,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 19:37:03,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:03,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 19:37:03,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-14 19:37:03,859 INFO L87 Difference]: Start difference. First operand 111 states and 117 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) [2021-12-14 19:37:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:03,964 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-12-14 19:37:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:37:03,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 25 [2021-12-14 19:37:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:03,965 INFO L225 Difference]: With dead ends: 111 [2021-12-14 19:37:03,965 INFO L226 Difference]: Without dead ends: 111 [2021-12-14 19:37:03,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-14 19:37:03,966 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 160 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:03,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 56 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:37:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-14 19:37:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-12-14 19:37:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 109 states have internal predecessors, (116), 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) [2021-12-14 19:37:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2021-12-14 19:37:03,968 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 25 [2021-12-14 19:37:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:03,969 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2021-12-14 19:37:03,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) [2021-12-14 19:37:03,969 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2021-12-14 19:37:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-14 19:37:03,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:03,970 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] [2021-12-14 19:37:03,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 19:37:03,970 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1704212734, now seen corresponding path program 1 times [2021-12-14 19:37:03,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:03,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586610626] [2021-12-14 19:37:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:03,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:04,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:04,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586610626] [2021-12-14 19:37:04,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586610626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:04,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:04,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:37:04,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832508719] [2021-12-14 19:37:04,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:04,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:37:04,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:04,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:37:04,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:37:04,015 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-12-14 19:37:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:04,055 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2021-12-14 19:37:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:37:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2021-12-14 19:37:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:04,057 INFO L225 Difference]: With dead ends: 103 [2021-12-14 19:37:04,057 INFO L226 Difference]: Without dead ends: 103 [2021-12-14 19:37:04,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:37:04,057 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:04,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 48 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:37:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-14 19:37:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-12-14 19:37:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 102 states have internal predecessors, (108), 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) [2021-12-14 19:37:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2021-12-14 19:37:04,062 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 25 [2021-12-14 19:37:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:04,063 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2021-12-14 19:37:04,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-12-14 19:37:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2021-12-14 19:37:04,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 19:37:04,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:04,064 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] [2021-12-14 19:37:04,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 19:37:04,064 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1290987217, now seen corresponding path program 1 times [2021-12-14 19:37:04,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:04,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891492767] [2021-12-14 19:37:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:04,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:04,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:04,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891492767] [2021-12-14 19:37:04,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891492767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:04,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:04,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:37:04,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801616426] [2021-12-14 19:37:04,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:04,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:37:04,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:37:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:37:04,127 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-12-14 19:37:04,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:04,182 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2021-12-14 19:37:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:37:04,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-12-14 19:37:04,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:04,183 INFO L225 Difference]: With dead ends: 102 [2021-12-14 19:37:04,183 INFO L226 Difference]: Without dead ends: 102 [2021-12-14 19:37:04,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:37:04,184 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 78 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:04,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 127 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:37:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-14 19:37:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-12-14 19:37:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 101 states have internal predecessors, (107), 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) [2021-12-14 19:37:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2021-12-14 19:37:04,187 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 26 [2021-12-14 19:37:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:04,187 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2021-12-14 19:37:04,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-12-14 19:37:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2021-12-14 19:37:04,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-14 19:37:04,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:04,188 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] [2021-12-14 19:37:04,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 19:37:04,188 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1365898173, now seen corresponding path program 1 times [2021-12-14 19:37:04,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:04,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532800970] [2021-12-14 19:37:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:04,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:04,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:04,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532800970] [2021-12-14 19:37:04,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532800970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:04,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:04,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:37:04,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489949353] [2021-12-14 19:37:04,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:04,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:37:04,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:04,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:37:04,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:37:04,233 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2021-12-14 19:37:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:04,309 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2021-12-14 19:37:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:37:04,309 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), 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 27 [2021-12-14 19:37:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:04,310 INFO L225 Difference]: With dead ends: 101 [2021-12-14 19:37:04,310 INFO L226 Difference]: Without dead ends: 101 [2021-12-14 19:37:04,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:37:04,310 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 71 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:04,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 103 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:37:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-14 19:37:04,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-12-14 19:37:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.308641975308642) internal successors, (106), 100 states have internal predecessors, (106), 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) [2021-12-14 19:37:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2021-12-14 19:37:04,313 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 27 [2021-12-14 19:37:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:04,313 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2021-12-14 19:37:04,313 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), 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) [2021-12-14 19:37:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2021-12-14 19:37:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-14 19:37:04,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:04,314 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] [2021-12-14 19:37:04,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 19:37:04,314 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash -606829485, now seen corresponding path program 1 times [2021-12-14 19:37:04,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:04,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454406700] [2021-12-14 19:37:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:04,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:04,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:04,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454406700] [2021-12-14 19:37:04,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454406700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:04,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:04,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 19:37:04,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558958069] [2021-12-14 19:37:04,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:04,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 19:37:04,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:04,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 19:37:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-14 19:37:04,547 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 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) [2021-12-14 19:37:05,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:05,081 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2021-12-14 19:37:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 19:37:05,081 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 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 28 [2021-12-14 19:37:05,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:05,082 INFO L225 Difference]: With dead ends: 105 [2021-12-14 19:37:05,082 INFO L226 Difference]: Without dead ends: 105 [2021-12-14 19:37:05,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2021-12-14 19:37:05,083 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 136 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:05,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 287 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 19:37:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-14 19:37:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-12-14 19:37:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 104 states have internal predecessors, (110), 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) [2021-12-14 19:37:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2021-12-14 19:37:05,085 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 28 [2021-12-14 19:37:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:05,085 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2021-12-14 19:37:05,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 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) [2021-12-14 19:37:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2021-12-14 19:37:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-14 19:37:05,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:05,085 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] [2021-12-14 19:37:05,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 19:37:05,086 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:05,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1631844736, now seen corresponding path program 1 times [2021-12-14 19:37:05,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:05,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566887718] [2021-12-14 19:37:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:05,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:05,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:05,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566887718] [2021-12-14 19:37:05,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566887718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:05,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:05,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:37:05,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620234018] [2021-12-14 19:37:05,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:05,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 19:37:05,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:05,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 19:37:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:37:05,138 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-12-14 19:37:05,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:05,234 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-12-14 19:37:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 19:37:05,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2021-12-14 19:37:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:05,235 INFO L225 Difference]: With dead ends: 104 [2021-12-14 19:37:05,235 INFO L226 Difference]: Without dead ends: 104 [2021-12-14 19:37:05,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-14 19:37:05,236 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 128 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:05,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 83 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:37:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-14 19:37:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-12-14 19:37:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 85 states have (on average 1.2823529411764707) internal successors, (109), 103 states have internal predecessors, (109), 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) [2021-12-14 19:37:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2021-12-14 19:37:05,239 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 29 [2021-12-14 19:37:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:05,239 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2021-12-14 19:37:05,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-12-14 19:37:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2021-12-14 19:37:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 19:37:05,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:05,240 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] [2021-12-14 19:37:05,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 19:37:05,240 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1014103750, now seen corresponding path program 1 times [2021-12-14 19:37:05,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:05,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554539241] [2021-12-14 19:37:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:05,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:05,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:05,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554539241] [2021-12-14 19:37:05,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554539241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:05,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:05,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-14 19:37:05,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617158182] [2021-12-14 19:37:05,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:05,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 19:37:05,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 19:37:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-12-14 19:37:05,999 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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) [2021-12-14 19:37:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:07,162 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2021-12-14 19:37:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 19:37:07,162 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 33 [2021-12-14 19:37:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:07,163 INFO L225 Difference]: With dead ends: 153 [2021-12-14 19:37:07,163 INFO L226 Difference]: Without dead ends: 151 [2021-12-14 19:37:07,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2021-12-14 19:37:07,164 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 169 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:07,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 369 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 19:37:07,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-14 19:37:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 127. [2021-12-14 19:37:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 126 states have internal predecessors, (133), 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) [2021-12-14 19:37:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2021-12-14 19:37:07,168 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 33 [2021-12-14 19:37:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:07,168 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2021-12-14 19:37:07,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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) [2021-12-14 19:37:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2021-12-14 19:37:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 19:37:07,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:07,169 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] [2021-12-14 19:37:07,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 19:37:07,169 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1014104394, now seen corresponding path program 1 times [2021-12-14 19:37:07,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:07,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523033916] [2021-12-14 19:37:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:07,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:07,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:07,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523033916] [2021-12-14 19:37:07,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523033916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:37:07,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:37:07,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-14 19:37:07,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969755598] [2021-12-14 19:37:07,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:37:07,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 19:37:07,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 19:37:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-14 19:37:07,540 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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) [2021-12-14 19:37:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:08,220 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2021-12-14 19:37:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 19:37:08,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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 33 [2021-12-14 19:37:08,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:08,221 INFO L225 Difference]: With dead ends: 130 [2021-12-14 19:37:08,221 INFO L226 Difference]: Without dead ends: 113 [2021-12-14 19:37:08,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-12-14 19:37:08,222 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:08,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 528 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 19:37:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-14 19:37:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2021-12-14 19:37:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 91 states have (on average 1.2637362637362637) internal successors, (115), 109 states have internal predecessors, (115), 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) [2021-12-14 19:37:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2021-12-14 19:37:08,224 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 33 [2021-12-14 19:37:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:08,224 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2021-12-14 19:37:08,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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) [2021-12-14 19:37:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2021-12-14 19:37:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 19:37:08,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:08,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:37:08,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 19:37:08,225 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash 762441251, now seen corresponding path program 1 times [2021-12-14 19:37:08,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:08,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119618725] [2021-12-14 19:37:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:08,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 19:37:08,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:08,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119618725] [2021-12-14 19:37:08,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119618725] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:37:08,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332927365] [2021-12-14 19:37:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:08,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:37:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:37:08,639 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) [2021-12-14 19:37:08,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 19:37:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:08,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-14 19:37:08,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:37:08,756 INFO L388 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 [2021-12-14 19:37:08,784 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 19:37:08,784 INFO L388 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 [2021-12-14 19:37:08,900 INFO L388 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 13 treesize of output 9 [2021-12-14 19:37:08,965 INFO L388 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 11 treesize of output 7 [2021-12-14 19:37:08,969 INFO L388 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 23 treesize of output 22 [2021-12-14 19:37:09,082 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-14 19:37:09,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-14 19:37:09,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-14 19:37:09,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-12-14 19:37:09,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-12-14 19:37:09,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:09,634 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 19:37:09,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 52 [2021-12-14 19:37:09,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 19:37:09,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2021-12-14 19:37:09,976 INFO L388 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 46 treesize of output 26 [2021-12-14 19:37:10,053 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-12-14 19:37:10,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 24 [2021-12-14 19:37:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:10,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:37:10,124 INFO L388 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 80 treesize of output 76 [2021-12-14 19:37:19,149 INFO L388 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 855 treesize of output 839 [2021-12-14 19:37:20,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 19:37:20,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 19:37:20,427 INFO L354 Elim1Store]: treesize reduction 75, result has 69.5 percent of original size [2021-12-14 19:37:20,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 159831 treesize of output 147535 [2021-12-14 19:37:28,533 WARN L227 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 579 DAG size of output: 555 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-14 19:37:29,068 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-14 19:37:29,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 19 [2021-12-14 19:37:30,032 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-14 19:37:30,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 19:37:30,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-14 19:37:30,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470624932] [2021-12-14 19:37:30,032 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 19:37:30,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-14 19:37:30,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-14 19:37:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1540, Unknown=1, NotChecked=0, Total=1722 [2021-12-14 19:37:30,034 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 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) [2021-12-14 19:37:31,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:31,251 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2021-12-14 19:37:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-14 19:37:31,253 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 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 37 [2021-12-14 19:37:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:31,253 INFO L225 Difference]: With dead ends: 110 [2021-12-14 19:37:31,253 INFO L226 Difference]: Without dead ends: 110 [2021-12-14 19:37:31,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=594, Invalid=3565, Unknown=1, NotChecked=0, Total=4160 [2021-12-14 19:37:31,255 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 210 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:31,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 347 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 19:37:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-14 19:37:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2021-12-14 19:37:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 91 states have (on average 1.2527472527472527) internal successors, (114), 108 states have internal predecessors, (114), 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) [2021-12-14 19:37:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2021-12-14 19:37:31,258 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 37 [2021-12-14 19:37:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:31,258 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2021-12-14 19:37:31,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 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) [2021-12-14 19:37:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2021-12-14 19:37:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 19:37:31,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:31,259 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-14 19:37:31,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 19:37:31,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:37:31,463 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash -578213978, now seen corresponding path program 1 times [2021-12-14 19:37:31,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:31,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707934695] [2021-12-14 19:37:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:31,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 19:37:31,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:31,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707934695] [2021-12-14 19:37:31,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707934695] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:37:31,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833768713] [2021-12-14 19:37:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:31,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:37:31,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:37:31,547 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) [2021-12-14 19:37:31,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 19:37:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:31,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-14 19:37:31,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:37:31,727 INFO L388 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 [2021-12-14 19:37:31,827 INFO L388 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 11 treesize of output 7 [2021-12-14 19:37:31,868 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-14 19:37:31,869 INFO L388 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 [2021-12-14 19:37:31,915 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-14 19:37:31,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-12-14 19:37:31,961 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-14 19:37:31,962 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-14 19:37:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 19:37:31,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:37:32,041 INFO L388 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 38 treesize of output 34 [2021-12-14 19:37:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 19:37:33,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833768713] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 19:37:33,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 19:37:33,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2021-12-14 19:37:33,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549446256] [2021-12-14 19:37:33,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 19:37:33,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 19:37:33,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 19:37:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-12-14 19:37:33,533 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand has 18 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 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) [2021-12-14 19:37:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:33,760 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-12-14 19:37:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 19:37:33,761 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 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 37 [2021-12-14 19:37:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:33,761 INFO L225 Difference]: With dead ends: 108 [2021-12-14 19:37:33,762 INFO L226 Difference]: Without dead ends: 108 [2021-12-14 19:37:33,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-12-14 19:37:33,762 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 120 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:33,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 274 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 81 Unchecked, 0.1s Time] [2021-12-14 19:37:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-14 19:37:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-14 19:37:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 107 states have internal predecessors, (113), 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) [2021-12-14 19:37:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2021-12-14 19:37:33,764 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 37 [2021-12-14 19:37:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:33,764 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2021-12-14 19:37:33,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 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) [2021-12-14 19:37:33,765 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2021-12-14 19:37:33,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 19:37:33,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:33,765 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-14 19:37:33,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 19:37:33,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:37:33,966 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:33,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash -578213977, now seen corresponding path program 1 times [2021-12-14 19:37:33,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:33,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105980459] [2021-12-14 19:37:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:33,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 19:37:34,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:34,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105980459] [2021-12-14 19:37:34,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105980459] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:37:34,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653256497] [2021-12-14 19:37:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:34,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:37:34,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:37:34,082 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) [2021-12-14 19:37:34,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 19:37:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:34,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-14 19:37:34,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:37:34,259 INFO L388 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 [2021-12-14 19:37:34,268 INFO L388 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 [2021-12-14 19:37:34,469 INFO L388 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 11 treesize of output 7 [2021-12-14 19:37:34,475 INFO L388 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 11 treesize of output 7 [2021-12-14 19:37:34,540 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-14 19:37:34,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-14 19:37:34,558 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-14 19:37:34,558 INFO L388 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 15 treesize of output 15 [2021-12-14 19:37:34,632 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-14 19:37:34,632 INFO L388 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 1 case distinctions, treesize of input 23 treesize of output 18 [2021-12-14 19:37:34,642 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-14 19:37:34,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-12-14 19:37:34,723 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-14 19:37:34,723 INFO L388 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-14 19:37:34,728 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-14 19:37:34,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2021-12-14 19:37:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 19:37:34,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:37:34,916 INFO L388 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 84 treesize of output 80 [2021-12-14 19:37:34,919 INFO L388 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 135 treesize of output 123 [2021-12-14 19:37:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 19:37:35,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653256497] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 19:37:35,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 19:37:35,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2021-12-14 19:37:35,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221123294] [2021-12-14 19:37:35,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 19:37:35,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-14 19:37:35,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:37:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-14 19:37:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-12-14 19:37:35,367 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 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) [2021-12-14 19:37:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:37:35,673 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2021-12-14 19:37:35,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 19:37:35,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 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 37 [2021-12-14 19:37:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:37:35,676 INFO L225 Difference]: With dead ends: 107 [2021-12-14 19:37:35,676 INFO L226 Difference]: Without dead ends: 107 [2021-12-14 19:37:35,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-12-14 19:37:35,677 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 183 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:37:35,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 307 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 253 Invalid, 0 Unknown, 74 Unchecked, 0.1s Time] [2021-12-14 19:37:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-14 19:37:35,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2021-12-14 19:37:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 98 states have internal predecessors, (103), 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) [2021-12-14 19:37:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2021-12-14 19:37:35,679 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 37 [2021-12-14 19:37:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:37:35,680 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2021-12-14 19:37:35,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 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) [2021-12-14 19:37:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2021-12-14 19:37:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 19:37:35,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:37:35,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:37:35,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 19:37:35,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-14 19:37:35,904 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-14 19:37:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:37:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2134124894, now seen corresponding path program 1 times [2021-12-14 19:37:35,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:37:35,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055196252] [2021-12-14 19:37:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:35,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:37:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 19:37:36,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:37:36,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055196252] [2021-12-14 19:37:36,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055196252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 19:37:36,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498389797] [2021-12-14 19:37:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:37:36,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 19:37:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:37:36,296 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) [2021-12-14 19:37:36,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 19:37:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:37:36,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-14 19:37:36,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:37:36,601 INFO L388 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 13 treesize of output 9 [2021-12-14 19:37:36,678 INFO L388 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 11 treesize of output 7 [2021-12-14 19:37:36,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:36,685 INFO L388 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 19 treesize of output 18 [2021-12-14 19:37:36,797 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-14 19:37:36,797 INFO L388 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 15 treesize of output 15 [2021-12-14 19:37:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:36,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:36,924 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 19:37:36,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 35 [2021-12-14 19:37:36,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:36,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-12-14 19:37:37,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:37,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-14 19:37:37,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:37,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:37,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 19:37:37,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:37,360 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-12-14 19:37:37,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 62 treesize of output 56 [2021-12-14 19:37:37,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 19:37:37,474 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 19:37:37,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 48 [2021-12-14 19:37:37,488 INFO L388 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 11 treesize of output 7 [2021-12-14 19:37:37,718 INFO L388 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 15 treesize of output 7 [2021-12-14 19:37:37,783 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-14 19:37:37,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 26 [2021-12-14 19:37:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:37:37,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 19:37:37,870 INFO L388 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 84 treesize of output 80