./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/lockfree-3.0.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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/lockfree-3.0.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 ce7b97696e85da66033a1f3711f1d24681434c76600ae3cd891d7ea07b7fcbea --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:59:58,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:59:58,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:59:58,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:59:58,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:59:58,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:59:58,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:59:58,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:59:58,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:59:58,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:59:58,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:59:58,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:59:58,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:59:58,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:59:58,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:59:58,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:59:58,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:59:58,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:59:58,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:59:58,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:59:58,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:59:58,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:59:58,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:59:58,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:59:58,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:59:58,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:59:58,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:59:58,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:59:58,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:59:58,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:59:58,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:59:58,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:59:58,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:59:58,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:59:58,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:59:58,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:59:58,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:59:58,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:59:58,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:59:58,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:59:58,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:59:58,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 13:59:58,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:59:58,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:59:58,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:59:58,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:59:58,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:59:58,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:59:58,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:59:58,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:59:58,482 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:59:58,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:59:58,482 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:59:58,483 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 13:59:58,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:59:58,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:59:58,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:59:58,483 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 13:59:58,484 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 13:59:58,484 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 13:59:58,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:59:58,484 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:59:58,484 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:59:58,485 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:59:58,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:59:58,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:59:58,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:59:58,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:59:58,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:59:58,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:59:58,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 13:59:58,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 13:59:58,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:59:58,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce7b97696e85da66033a1f3711f1d24681434c76600ae3cd891d7ea07b7fcbea [2021-12-15 13:59:58,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:59:58,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:59:58,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:59:58,695 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:59:58,696 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:59:58,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/lockfree-3.0.i [2021-12-15 13:59:58,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8981f20/00e9be291062481099318800098b2725/FLAGb3ee75717 [2021-12-15 13:59:59,155 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:59:59,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.i [2021-12-15 13:59:59,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8981f20/00e9be291062481099318800098b2725/FLAGb3ee75717 [2021-12-15 13:59:59,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8981f20/00e9be291062481099318800098b2725 [2021-12-15 13:59:59,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:59:59,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:59:59,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:59:59,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:59:59,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:59:59,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be0b618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59, skipping insertion in model container [2021-12-15 13:59:59,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:59:59,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:59:59,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:59:59,510 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:59:59,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:59:59,568 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:59:59,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59 WrapperNode [2021-12-15 13:59:59,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:59:59,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:59:59,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:59:59,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:59:59,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,626 INFO L137 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2021-12-15 13:59:59,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:59:59,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:59:59,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:59:59,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:59:59,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:59:59,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:59:59,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:59:59,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:59:59,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (1/1) ... [2021-12-15 13:59:59,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:59:59,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:59:59,706 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) [2021-12-15 13:59:59,712 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 [2021-12-15 13:59:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 13:59:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 13:59:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:59:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:59:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:59:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:59:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:59:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 13:59:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:59:59,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:59:59,801 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:59:59,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:00:00,039 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:00:00,043 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:00:00,044 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 14:00:00,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:00:00 BoogieIcfgContainer [2021-12-15 14:00:00,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:00:00,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:00:00,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:00:00,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:00:00,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:59:59" (1/3) ... [2021-12-15 14:00:00,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d9ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:00:00, skipping insertion in model container [2021-12-15 14:00:00,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:59:59" (2/3) ... [2021-12-15 14:00:00,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d9ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:00:00, skipping insertion in model container [2021-12-15 14:00:00,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:00:00" (3/3) ... [2021-12-15 14:00:00,051 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.0.i [2021-12-15 14:00:00,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:00:00,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-12-15 14:00:00,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:00:00,100 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 [2021-12-15 14:00:00,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-12-15 14:00:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 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) [2021-12-15 14:00:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 14:00:00,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:00,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 14:00:00,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:00,118 INFO L85 PathProgramCache]: Analyzing trace with hash 28819106, now seen corresponding path program 1 times [2021-12-15 14:00:00,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:00,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231409816] [2021-12-15 14:00:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:00,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:00,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:00,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231409816] [2021-12-15 14:00:00,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231409816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:00,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:00,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:00,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317252192] [2021-12-15 14:00:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:00,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 14:00:00,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 14:00:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:00:00,253 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-12-15 14:00:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:00,268 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2021-12-15 14:00:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:00:00,271 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-12-15 14:00:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:00,277 INFO L225 Difference]: With dead ends: 64 [2021-12-15 14:00:00,277 INFO L226 Difference]: Without dead ends: 62 [2021-12-15 14:00:00,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:00:00,280 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:00,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-15 14:00:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-12-15 14:00:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 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) [2021-12-15 14:00:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2021-12-15 14:00:00,308 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2021-12-15 14:00:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:00,308 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2021-12-15 14:00:00,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-12-15 14:00:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2021-12-15 14:00:00,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 14:00:00,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:00,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:00,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:00:00,310 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:00,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1806851052, now seen corresponding path program 1 times [2021-12-15 14:00:00,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:00,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685863843] [2021-12-15 14:00:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:00,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:00,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:00,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685863843] [2021-12-15 14:00:00,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685863843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:00,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:00,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:00:00,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171014005] [2021-12-15 14:00:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:00,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:00,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:00,342 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-15 14:00:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:00,361 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-12-15 14:00:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:00,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-15 14:00:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:00,362 INFO L225 Difference]: With dead ends: 63 [2021-12-15 14:00:00,363 INFO L226 Difference]: Without dead ends: 63 [2021-12-15 14:00:00,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:00,364 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:00,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:00,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-15 14:00:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-15 14:00:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 62 states have internal predecessors, (80), 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) [2021-12-15 14:00:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2021-12-15 14:00:00,369 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 7 [2021-12-15 14:00:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:00,370 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2021-12-15 14:00:00,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-15 14:00:00,370 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2021-12-15 14:00:00,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 14:00:00,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:00,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:00,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:00:00,371 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:00,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910634, now seen corresponding path program 1 times [2021-12-15 14:00:00,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:00,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116086096] [2021-12-15 14:00:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:00,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:00,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:00,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116086096] [2021-12-15 14:00:00,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116086096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:00,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:00,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:00,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729974125] [2021-12-15 14:00:00,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:00,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:00,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:00,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:00,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:00,416 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-15 14:00:00,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:00,446 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2021-12-15 14:00:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:00,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-12-15 14:00:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:00,451 INFO L225 Difference]: With dead ends: 111 [2021-12-15 14:00:00,452 INFO L226 Difference]: Without dead ends: 111 [2021-12-15 14:00:00,452 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 [2021-12-15 14:00:00,457 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:00,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:00,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-15 14:00:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2021-12-15 14:00:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.8767123287671232) internal successors, (137), 92 states have internal predecessors, (137), 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) [2021-12-15 14:00:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 137 transitions. [2021-12-15 14:00:00,470 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 137 transitions. Word has length 7 [2021-12-15 14:00:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:00,470 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 137 transitions. [2021-12-15 14:00:00,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-15 14:00:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 137 transitions. [2021-12-15 14:00:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:00:00,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:00,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:00,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 14:00:00,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2021-12-15 14:00:00,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:00,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245054283] [2021-12-15 14:00:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:00,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:00,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:00,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245054283] [2021-12-15 14:00:00,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245054283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:00,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:00,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:00:00,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817248852] [2021-12-15 14:00:00,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:00,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:00,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:00,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:00,545 INFO L87 Difference]: Start difference. First operand 93 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:00,594 INFO L93 Difference]: Finished difference Result 101 states and 146 transitions. [2021-12-15 14:00:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:00:00,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 14:00:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:00,596 INFO L225 Difference]: With dead ends: 101 [2021-12-15 14:00:00,597 INFO L226 Difference]: Without dead ends: 101 [2021-12-15 14:00:00,597 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 [2021-12-15 14:00:00,598 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 6 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:00,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 211 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-15 14:00:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2021-12-15 14:00:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.8533333333333333) internal successors, (139), 94 states have internal predecessors, (139), 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) [2021-12-15 14:00:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 139 transitions. [2021-12-15 14:00:00,613 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 139 transitions. Word has length 8 [2021-12-15 14:00:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:00,613 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 139 transitions. [2021-12-15 14:00:00,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 139 transitions. [2021-12-15 14:00:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:00:00,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:00,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:00,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 14:00:00,614 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:00,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash 179653412, now seen corresponding path program 1 times [2021-12-15 14:00:00,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:00,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644216290] [2021-12-15 14:00:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:00,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:00,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:00,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644216290] [2021-12-15 14:00:00,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644216290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:00,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:00,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:00,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982228798] [2021-12-15 14:00:00,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:00,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:00,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:00,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:00,643 INFO L87 Difference]: Start difference. First operand 95 states and 139 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:00,701 INFO L93 Difference]: Finished difference Result 177 states and 261 transitions. [2021-12-15 14:00:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:00,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 14:00:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:00,702 INFO L225 Difference]: With dead ends: 177 [2021-12-15 14:00:00,702 INFO L226 Difference]: Without dead ends: 174 [2021-12-15 14:00:00,702 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 [2021-12-15 14:00:00,703 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:00,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:00,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-12-15 14:00:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 153. [2021-12-15 14:00:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 133 states have (on average 1.849624060150376) internal successors, (246), 152 states have internal predecessors, (246), 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) [2021-12-15 14:00:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 246 transitions. [2021-12-15 14:00:00,710 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 246 transitions. Word has length 8 [2021-12-15 14:00:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:00,710 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 246 transitions. [2021-12-15 14:00:00,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:00,710 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 246 transitions. [2021-12-15 14:00:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:00:00,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:00,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:00,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 14:00:00,711 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:00,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:00,711 INFO L85 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2021-12-15 14:00:00,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:00,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301992297] [2021-12-15 14:00:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:00,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:00,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:00,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301992297] [2021-12-15 14:00:00,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301992297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:00,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:00,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:00,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869603898] [2021-12-15 14:00:00,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:00,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:00,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:00,745 INFO L87 Difference]: Start difference. First operand 153 states and 246 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:00,807 INFO L93 Difference]: Finished difference Result 231 states and 355 transitions. [2021-12-15 14:00:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:00,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 14:00:00,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:00,809 INFO L225 Difference]: With dead ends: 231 [2021-12-15 14:00:00,809 INFO L226 Difference]: Without dead ends: 231 [2021-12-15 14:00:00,809 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 [2021-12-15 14:00:00,810 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 69 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:00,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 172 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-15 14:00:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 208. [2021-12-15 14:00:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 190 states have (on average 1.7894736842105263) internal successors, (340), 207 states have internal predecessors, (340), 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) [2021-12-15 14:00:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 340 transitions. [2021-12-15 14:00:00,826 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 340 transitions. Word has length 8 [2021-12-15 14:00:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:00,826 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 340 transitions. [2021-12-15 14:00:00,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 340 transitions. [2021-12-15 14:00:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:00:00,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:00,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:00,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 14:00:00,828 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2021-12-15 14:00:00,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:00,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534413562] [2021-12-15 14:00:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:00,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:00,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:00,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534413562] [2021-12-15 14:00:00,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534413562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:00,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:00,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:00:00,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661580742] [2021-12-15 14:00:00,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:00,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:00,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:00,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:00,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:00:00,863 INFO L87 Difference]: Start difference. First operand 208 states and 340 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:00,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:00,897 INFO L93 Difference]: Finished difference Result 226 states and 346 transitions. [2021-12-15 14:00:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:00,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 14:00:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:00,899 INFO L225 Difference]: With dead ends: 226 [2021-12-15 14:00:00,899 INFO L226 Difference]: Without dead ends: 226 [2021-12-15 14:00:00,899 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 [2021-12-15 14:00:00,900 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 68 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:00,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 180 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-15 14:00:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 206. [2021-12-15 14:00:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 190 states have (on average 1.7473684210526317) internal successors, (332), 205 states have internal predecessors, (332), 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) [2021-12-15 14:00:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 332 transitions. [2021-12-15 14:00:00,919 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 332 transitions. Word has length 8 [2021-12-15 14:00:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:00,919 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 332 transitions. [2021-12-15 14:00:00,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:00:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 332 transitions. [2021-12-15 14:00:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 14:00:00,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:00,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:00,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 14:00:00,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:00,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:00,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2021-12-15 14:00:00,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:00,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167112395] [2021-12-15 14:00:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:00,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:00,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:00,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167112395] [2021-12-15 14:00:00,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167112395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:00,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:00,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 14:00:00,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891184686] [2021-12-15 14:00:00,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:00,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 14:00:00,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:00,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 14:00:00,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:00:00,952 INFO L87 Difference]: Start difference. First operand 206 states and 332 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-12-15 14:00:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:00,989 INFO L93 Difference]: Finished difference Result 445 states and 675 transitions. [2021-12-15 14:00:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 14:00:00,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-12-15 14:00:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:00,992 INFO L225 Difference]: With dead ends: 445 [2021-12-15 14:00:00,992 INFO L226 Difference]: Without dead ends: 445 [2021-12-15 14:00:00,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:00,993 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 101 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:00,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 360 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-12-15 14:00:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 354. [2021-12-15 14:00:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 338 states have (on average 1.680473372781065) internal successors, (568), 353 states have internal predecessors, (568), 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) [2021-12-15 14:00:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 568 transitions. [2021-12-15 14:00:01,001 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 568 transitions. Word has length 9 [2021-12-15 14:00:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:01,001 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 568 transitions. [2021-12-15 14:00:01,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-12-15 14:00:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 568 transitions. [2021-12-15 14:00:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 14:00:01,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:01,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:01,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 14:00:01,003 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:01,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:01,003 INFO L85 PathProgramCache]: Analyzing trace with hash 845049582, now seen corresponding path program 1 times [2021-12-15 14:00:01,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:01,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098674229] [2021-12-15 14:00:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:01,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:01,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:01,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098674229] [2021-12-15 14:00:01,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098674229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:01,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:01,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 14:00:01,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439342901] [2021-12-15 14:00:01,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:01,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 14:00:01,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 14:00:01,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:00:01,048 INFO L87 Difference]: Start difference. First operand 354 states and 568 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2021-12-15 14:00:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:01,080 INFO L93 Difference]: Finished difference Result 826 states and 1228 transitions. [2021-12-15 14:00:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 14:00:01,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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 [2021-12-15 14:00:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:01,083 INFO L225 Difference]: With dead ends: 826 [2021-12-15 14:00:01,083 INFO L226 Difference]: Without dead ends: 826 [2021-12-15 14:00:01,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:01,083 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 90 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:01,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 353 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-12-15 14:00:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 594. [2021-12-15 14:00:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 578 states have (on average 1.5778546712802768) internal successors, (912), 593 states have internal predecessors, (912), 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) [2021-12-15 14:00:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 912 transitions. [2021-12-15 14:00:01,107 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 912 transitions. Word has length 10 [2021-12-15 14:00:01,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:01,107 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 912 transitions. [2021-12-15 14:00:01,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2021-12-15 14:00:01,108 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 912 transitions. [2021-12-15 14:00:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 14:00:01,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:01,108 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:01,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 14:00:01,109 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:01,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash 22246394, now seen corresponding path program 1 times [2021-12-15 14:00:01,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:01,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618582815] [2021-12-15 14:00:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:01,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:01,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:01,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618582815] [2021-12-15 14:00:01,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618582815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:01,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:01,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 14:00:01,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135389350] [2021-12-15 14:00:01,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:01,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 14:00:01,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 14:00:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:00:01,147 INFO L87 Difference]: Start difference. First operand 594 states and 912 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-12-15 14:00:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:01,176 INFO L93 Difference]: Finished difference Result 906 states and 1406 transitions. [2021-12-15 14:00:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 14:00:01,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-12-15 14:00:01,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:01,179 INFO L225 Difference]: With dead ends: 906 [2021-12-15 14:00:01,179 INFO L226 Difference]: Without dead ends: 906 [2021-12-15 14:00:01,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:01,180 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 101 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:01,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 279 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-12-15 14:00:01,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 888. [2021-12-15 14:00:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 872 states have (on average 1.603211009174312) internal successors, (1398), 887 states have internal predecessors, (1398), 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) [2021-12-15 14:00:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1398 transitions. [2021-12-15 14:00:01,193 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1398 transitions. Word has length 16 [2021-12-15 14:00:01,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:01,193 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 1398 transitions. [2021-12-15 14:00:01,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-12-15 14:00:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1398 transitions. [2021-12-15 14:00:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 14:00:01,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:01,194 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:01,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 14:00:01,194 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:01,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:01,195 INFO L85 PathProgramCache]: Analyzing trace with hash 617603772, now seen corresponding path program 1 times [2021-12-15 14:00:01,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757974062] [2021-12-15 14:00:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:01,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:01,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:01,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757974062] [2021-12-15 14:00:01,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757974062] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:01,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43484188] [2021-12-15 14:00:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:01,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:01,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:01,246 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) [2021-12-15 14:00:01,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 14:00:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:01,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 14:00:01,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:01,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:01,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43484188] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:01,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:01,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2021-12-15 14:00:01,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058423268] [2021-12-15 14:00:01,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:01,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 14:00:01,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 14:00:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-15 14:00:01,460 INFO L87 Difference]: Start difference. First operand 888 states and 1398 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) [2021-12-15 14:00:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:01,567 INFO L93 Difference]: Finished difference Result 2236 states and 3388 transitions. [2021-12-15 14:00:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 14:00:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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 16 [2021-12-15 14:00:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:01,574 INFO L225 Difference]: With dead ends: 2236 [2021-12-15 14:00:01,575 INFO L226 Difference]: Without dead ends: 2236 [2021-12-15 14:00:01,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:01,575 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 245 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:01,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 622 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2021-12-15 14:00:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1272. [2021-12-15 14:00:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1256 states have (on average 1.5684713375796178) internal successors, (1970), 1271 states have internal predecessors, (1970), 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) [2021-12-15 14:00:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1970 transitions. [2021-12-15 14:00:01,610 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1970 transitions. Word has length 16 [2021-12-15 14:00:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:01,610 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 1970 transitions. [2021-12-15 14:00:01,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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) [2021-12-15 14:00:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1970 transitions. [2021-12-15 14:00:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 14:00:01,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:01,611 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:01,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:01,822 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,SelfDestructingSolverStorable10 [2021-12-15 14:00:01,822 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:01,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:01,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1214108262, now seen corresponding path program 1 times [2021-12-15 14:00:01,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:01,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728637736] [2021-12-15 14:00:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:01,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 14:00:01,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:01,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728637736] [2021-12-15 14:00:01,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728637736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:01,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:01,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:00:01,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948233775] [2021-12-15 14:00:01,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:01,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:01,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:01,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:01,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:01,865 INFO L87 Difference]: Start difference. First operand 1272 states and 1970 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2021-12-15 14:00:01,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:01,897 INFO L93 Difference]: Finished difference Result 473 states and 648 transitions. [2021-12-15 14:00:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 14:00:01,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 [2021-12-15 14:00:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:01,899 INFO L225 Difference]: With dead ends: 473 [2021-12-15 14:00:01,899 INFO L226 Difference]: Without dead ends: 473 [2021-12-15 14:00:01,900 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 [2021-12-15 14:00:01,901 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 106 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:01,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 243 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-12-15 14:00:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 353. [2021-12-15 14:00:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 341 states have (on average 1.501466275659824) internal successors, (512), 352 states have internal predecessors, (512), 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) [2021-12-15 14:00:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 512 transitions. [2021-12-15 14:00:01,905 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 512 transitions. Word has length 21 [2021-12-15 14:00:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:01,906 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 512 transitions. [2021-12-15 14:00:01,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2021-12-15 14:00:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 512 transitions. [2021-12-15 14:00:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 14:00:01,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:01,908 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:01,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 14:00:01,909 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:01,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1692627395, now seen corresponding path program 1 times [2021-12-15 14:00:01,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:01,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642515118] [2021-12-15 14:00:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:01,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:01,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:01,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642515118] [2021-12-15 14:00:01,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642515118] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:01,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270444363] [2021-12-15 14:00:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:01,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:01,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:01,987 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) [2021-12-15 14:00:01,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 14:00:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:02,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 14:00:02,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:02,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:02,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270444363] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:02,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:02,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-15 14:00:02,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214174538] [2021-12-15 14:00:02,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:02,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:00:02,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:00:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:00:02,290 INFO L87 Difference]: Start difference. First operand 353 states and 512 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 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) [2021-12-15 14:00:02,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:02,340 INFO L93 Difference]: Finished difference Result 1051 states and 1510 transitions. [2021-12-15 14:00:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:00:02,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 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 [2021-12-15 14:00:02,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:02,343 INFO L225 Difference]: With dead ends: 1051 [2021-12-15 14:00:02,344 INFO L226 Difference]: Without dead ends: 1051 [2021-12-15 14:00:02,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:00:02,344 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 177 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:02,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 161 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-12-15 14:00:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1007. [2021-12-15 14:00:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 995 states have (on average 1.485427135678392) internal successors, (1478), 1006 states have internal predecessors, (1478), 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) [2021-12-15 14:00:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1478 transitions. [2021-12-15 14:00:02,367 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1478 transitions. Word has length 24 [2021-12-15 14:00:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:02,367 INFO L470 AbstractCegarLoop]: Abstraction has 1007 states and 1478 transitions. [2021-12-15 14:00:02,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 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) [2021-12-15 14:00:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1478 transitions. [2021-12-15 14:00:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 14:00:02,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:02,368 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:02,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:02,575 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 [2021-12-15 14:00:02,576 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash -6965384, now seen corresponding path program 1 times [2021-12-15 14:00:02,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:02,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746929037] [2021-12-15 14:00:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:02,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:02,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746929037] [2021-12-15 14:00:02,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746929037] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321286986] [2021-12-15 14:00:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:02,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:02,615 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) [2021-12-15 14:00:02,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 14:00:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:02,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 14:00:02,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:02,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:02,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321286986] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:02,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:02,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2021-12-15 14:00:02,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316869799] [2021-12-15 14:00:02,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:02,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 14:00:02,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 14:00:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-15 14:00:02,780 INFO L87 Difference]: Start difference. First operand 1007 states and 1478 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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) [2021-12-15 14:00:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:02,994 INFO L93 Difference]: Finished difference Result 3857 states and 5384 transitions. [2021-12-15 14:00:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-15 14:00:02,995 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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 [2021-12-15 14:00:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:03,006 INFO L225 Difference]: With dead ends: 3857 [2021-12-15 14:00:03,006 INFO L226 Difference]: Without dead ends: 3857 [2021-12-15 14:00:03,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-12-15 14:00:03,007 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 723 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:03,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 474 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2021-12-15 14:00:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 2177. [2021-12-15 14:00:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2165 states have (on average 1.464203233256351) internal successors, (3170), 2176 states have internal predecessors, (3170), 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) [2021-12-15 14:00:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3170 transitions. [2021-12-15 14:00:03,065 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3170 transitions. Word has length 27 [2021-12-15 14:00:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:03,065 INFO L470 AbstractCegarLoop]: Abstraction has 2177 states and 3170 transitions. [2021-12-15 14:00:03,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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) [2021-12-15 14:00:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3170 transitions. [2021-12-15 14:00:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 14:00:03,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:03,067 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:03,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:03,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:03,283 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:03,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash 554127938, now seen corresponding path program 1 times [2021-12-15 14:00:03,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004417931] [2021-12-15 14:00:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:03,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 14:00:03,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004417931] [2021-12-15 14:00:03,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004417931] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020799975] [2021-12-15 14:00:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:03,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:03,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:03,348 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) [2021-12-15 14:00:03,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 14:00:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:03,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 14:00:03,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 14:00:03,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 14:00:03,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020799975] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:03,571 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:03,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2021-12-15 14:00:03,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422346653] [2021-12-15 14:00:03,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:03,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:00:03,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:00:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-15 14:00:03,573 INFO L87 Difference]: Start difference. First operand 2177 states and 3170 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2021-12-15 14:00:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:03,660 INFO L93 Difference]: Finished difference Result 1889 states and 2651 transitions. [2021-12-15 14:00:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 14:00:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 [2021-12-15 14:00:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:03,665 INFO L225 Difference]: With dead ends: 1889 [2021-12-15 14:00:03,665 INFO L226 Difference]: Without dead ends: 1889 [2021-12-15 14:00:03,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:03,666 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 424 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:03,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 653 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:03,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-12-15 14:00:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 831. [2021-12-15 14:00:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 819 states have (on average 1.468864468864469) internal successors, (1203), 830 states have internal predecessors, (1203), 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) [2021-12-15 14:00:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1203 transitions. [2021-12-15 14:00:03,681 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1203 transitions. Word has length 27 [2021-12-15 14:00:03,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:03,681 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1203 transitions. [2021-12-15 14:00:03,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2021-12-15 14:00:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1203 transitions. [2021-12-15 14:00:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-15 14:00:03,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:03,682 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:03,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-15 14:00:03,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-15 14:00:03,895 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:03,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:03,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2001409998, now seen corresponding path program 1 times [2021-12-15 14:00:03,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:03,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069509655] [2021-12-15 14:00:03,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:03,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-15 14:00:03,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:03,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069509655] [2021-12-15 14:00:03,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069509655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:03,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529090828] [2021-12-15 14:00:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:03,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:03,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:03,991 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) [2021-12-15 14:00:03,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 14:00:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:04,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-15 14:00:04,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:04,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:00:04,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529090828] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:04,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:04,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 13 [2021-12-15 14:00:04,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971401271] [2021-12-15 14:00:04,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:04,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 14:00:04,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 14:00:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:04,359 INFO L87 Difference]: Start difference. First operand 831 states and 1203 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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) [2021-12-15 14:00:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:04,588 INFO L93 Difference]: Finished difference Result 3249 states and 4495 transitions. [2021-12-15 14:00:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 14:00:04,589 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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 51 [2021-12-15 14:00:04,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:04,597 INFO L225 Difference]: With dead ends: 3249 [2021-12-15 14:00:04,597 INFO L226 Difference]: Without dead ends: 3249 [2021-12-15 14:00:04,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2021-12-15 14:00:04,598 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1306 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:04,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 861 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2021-12-15 14:00:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 1101. [2021-12-15 14:00:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1089 states have (on average 1.45821854912764) internal successors, (1588), 1100 states have internal predecessors, (1588), 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) [2021-12-15 14:00:04,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1588 transitions. [2021-12-15 14:00:04,621 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1588 transitions. Word has length 51 [2021-12-15 14:00:04,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:04,621 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1588 transitions. [2021-12-15 14:00:04,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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) [2021-12-15 14:00:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1588 transitions. [2021-12-15 14:00:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-15 14:00:04,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:04,622 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:04,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:04,840 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,SelfDestructingSolverStorable15 [2021-12-15 14:00:04,840 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:04,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1426339750, now seen corresponding path program 1 times [2021-12-15 14:00:04,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:04,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244156532] [2021-12-15 14:00:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:04,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-15 14:00:04,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:04,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244156532] [2021-12-15 14:00:04,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244156532] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:04,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178593744] [2021-12-15 14:00:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:04,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:04,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:04,908 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) [2021-12-15 14:00:04,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 14:00:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:04,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 14:00:04,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-15 14:00:05,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-15 14:00:05,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178593744] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:05,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-15 14:00:05,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2021-12-15 14:00:05,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127314820] [2021-12-15 14:00:05,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:05,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:00:05,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:05,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:00:05,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:05,229 INFO L87 Difference]: Start difference. First operand 1101 states and 1588 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-12-15 14:00:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:05,329 INFO L93 Difference]: Finished difference Result 2427 states and 3410 transitions. [2021-12-15 14:00:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 14:00:05,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 59 [2021-12-15 14:00:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:05,335 INFO L225 Difference]: With dead ends: 2427 [2021-12-15 14:00:05,336 INFO L226 Difference]: Without dead ends: 2427 [2021-12-15 14:00:05,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-12-15 14:00:05,336 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 225 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:05,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 500 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-12-15 14:00:05,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 1749. [2021-12-15 14:00:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1737 states have (on average 1.4352331606217616) internal successors, (2493), 1748 states have internal predecessors, (2493), 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) [2021-12-15 14:00:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2493 transitions. [2021-12-15 14:00:05,363 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2493 transitions. Word has length 59 [2021-12-15 14:00:05,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:05,363 INFO L470 AbstractCegarLoop]: Abstraction has 1749 states and 2493 transitions. [2021-12-15 14:00:05,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-12-15 14:00:05,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2493 transitions. [2021-12-15 14:00:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-15 14:00:05,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:05,364 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:05,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:05,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-15 14:00:05,578 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:05,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:05,579 INFO L85 PathProgramCache]: Analyzing trace with hash -443713253, now seen corresponding path program 1 times [2021-12-15 14:00:05,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:05,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811114866] [2021-12-15 14:00:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:05,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 49 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-15 14:00:05,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:05,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811114866] [2021-12-15 14:00:05,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811114866] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:05,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632859147] [2021-12-15 14:00:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:05,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:05,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:05,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:05,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 14:00:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:05,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 14:00:05,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-15 14:00:05,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-15 14:00:05,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632859147] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:05,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:05,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2021-12-15 14:00:05,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126737321] [2021-12-15 14:00:05,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:05,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 14:00:05,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 14:00:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-15 14:00:05,931 INFO L87 Difference]: Start difference. First operand 1749 states and 2493 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2021-12-15 14:00:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:06,896 INFO L93 Difference]: Finished difference Result 9763 states and 13743 transitions. [2021-12-15 14:00:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-15 14:00:06,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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 59 [2021-12-15 14:00:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:06,924 INFO L225 Difference]: With dead ends: 9763 [2021-12-15 14:00:06,924 INFO L226 Difference]: Without dead ends: 9763 [2021-12-15 14:00:06,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2021-12-15 14:00:06,925 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 1090 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:06,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 888 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 14:00:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9763 states. [2021-12-15 14:00:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9763 to 4918. [2021-12-15 14:00:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4918 states, 4907 states have (on average 1.4634196046464234) internal successors, (7181), 4917 states have internal predecessors, (7181), 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) [2021-12-15 14:00:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 7181 transitions. [2021-12-15 14:00:07,052 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 7181 transitions. Word has length 59 [2021-12-15 14:00:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:07,053 INFO L470 AbstractCegarLoop]: Abstraction has 4918 states and 7181 transitions. [2021-12-15 14:00:07,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2021-12-15 14:00:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 7181 transitions. [2021-12-15 14:00:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-15 14:00:07,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:07,056 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:07,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:07,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:07,279 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:07,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash -791217300, now seen corresponding path program 1 times [2021-12-15 14:00:07,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:07,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812646341] [2021-12-15 14:00:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:07,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-15 14:00:07,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:07,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812646341] [2021-12-15 14:00:07,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812646341] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:07,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145309512] [2021-12-15 14:00:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:07,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:07,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:07,348 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:07,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 14:00:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:07,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 14:00:07,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 101 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 14:00:07,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 14:00:07,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145309512] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:07,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:07,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2021-12-15 14:00:07,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983052758] [2021-12-15 14:00:07,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:07,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 14:00:07,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:07,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 14:00:07,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-15 14:00:07,662 INFO L87 Difference]: Start difference. First operand 4918 states and 7181 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 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) [2021-12-15 14:00:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:08,122 INFO L93 Difference]: Finished difference Result 10540 states and 15062 transitions. [2021-12-15 14:00:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-15 14:00:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 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 63 [2021-12-15 14:00:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:08,139 INFO L225 Difference]: With dead ends: 10540 [2021-12-15 14:00:08,139 INFO L226 Difference]: Without dead ends: 10540 [2021-12-15 14:00:08,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=407, Invalid=1233, Unknown=0, NotChecked=0, Total=1640 [2021-12-15 14:00:08,144 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1105 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:08,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 1577 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10540 states. [2021-12-15 14:00:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10540 to 4718. [2021-12-15 14:00:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4718 states, 4707 states have (on average 1.4418950499256427) internal successors, (6787), 4717 states have internal predecessors, (6787), 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) [2021-12-15 14:00:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4718 states to 4718 states and 6787 transitions. [2021-12-15 14:00:08,254 INFO L78 Accepts]: Start accepts. Automaton has 4718 states and 6787 transitions. Word has length 63 [2021-12-15 14:00:08,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:08,255 INFO L470 AbstractCegarLoop]: Abstraction has 4718 states and 6787 transitions. [2021-12-15 14:00:08,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 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) [2021-12-15 14:00:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4718 states and 6787 transitions. [2021-12-15 14:00:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-15 14:00:08,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:08,256 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:08,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-15 14:00:08,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:08,477 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash 767429099, now seen corresponding path program 1 times [2021-12-15 14:00:08,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:08,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405403733] [2021-12-15 14:00:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:08,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-15 14:00:08,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:08,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405403733] [2021-12-15 14:00:08,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405403733] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:08,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604339968] [2021-12-15 14:00:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:08,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:08,556 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:08,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 14:00:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:08,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-15 14:00:08,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-15 14:00:08,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-15 14:00:08,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604339968] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:08,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:08,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2021-12-15 14:00:08,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069973556] [2021-12-15 14:00:08,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:08,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 14:00:08,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 14:00:08,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-15 14:00:08,824 INFO L87 Difference]: Start difference. First operand 4718 states and 6787 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 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) [2021-12-15 14:00:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:09,046 INFO L93 Difference]: Finished difference Result 3827 states and 5204 transitions. [2021-12-15 14:00:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-15 14:00:09,047 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 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 63 [2021-12-15 14:00:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:09,052 INFO L225 Difference]: With dead ends: 3827 [2021-12-15 14:00:09,053 INFO L226 Difference]: Without dead ends: 3827 [2021-12-15 14:00:09,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-12-15 14:00:09,054 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 848 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:09,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 1770 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2021-12-15 14:00:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2865. [2021-12-15 14:00:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2854 states have (on average 1.3587946741415557) internal successors, (3878), 2864 states have internal predecessors, (3878), 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) [2021-12-15 14:00:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 3878 transitions. [2021-12-15 14:00:09,100 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 3878 transitions. Word has length 63 [2021-12-15 14:00:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:09,101 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 3878 transitions. [2021-12-15 14:00:09,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 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) [2021-12-15 14:00:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 3878 transitions. [2021-12-15 14:00:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 14:00:09,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:09,102 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:09,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:09,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:09,315 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash 965172541, now seen corresponding path program 1 times [2021-12-15 14:00:09,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:09,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261615017] [2021-12-15 14:00:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:09,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-15 14:00:09,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:09,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261615017] [2021-12-15 14:00:09,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261615017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:09,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408516479] [2021-12-15 14:00:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:09,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:09,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:09,349 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:09,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 14:00:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:09,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 14:00:09,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-15 14:00:09,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-15 14:00:09,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408516479] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:09,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:09,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-15 14:00:09,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013231468] [2021-12-15 14:00:09,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:09,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 14:00:09,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:09,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 14:00:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:00:09,630 INFO L87 Difference]: Start difference. First operand 2865 states and 3878 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-12-15 14:00:09,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:09,684 INFO L93 Difference]: Finished difference Result 2863 states and 3849 transitions. [2021-12-15 14:00:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 14:00:09,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 64 [2021-12-15 14:00:09,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:09,689 INFO L225 Difference]: With dead ends: 2863 [2021-12-15 14:00:09,689 INFO L226 Difference]: Without dead ends: 2863 [2021-12-15 14:00:09,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-15 14:00:09,690 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 109 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:09,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 256 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:09,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-12-15 14:00:09,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2854. [2021-12-15 14:00:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2854 states, 2843 states have (on average 1.3524446007738304) internal successors, (3845), 2853 states have internal predecessors, (3845), 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) [2021-12-15 14:00:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 3845 transitions. [2021-12-15 14:00:09,725 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 3845 transitions. Word has length 64 [2021-12-15 14:00:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:09,725 INFO L470 AbstractCegarLoop]: Abstraction has 2854 states and 3845 transitions. [2021-12-15 14:00:09,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-12-15 14:00:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 3845 transitions. [2021-12-15 14:00:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 14:00:09,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:09,726 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:09,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:09,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-15 14:00:09,944 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1737502264, now seen corresponding path program 1 times [2021-12-15 14:00:09,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:09,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611979326] [2021-12-15 14:00:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:09,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-15 14:00:09,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:09,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611979326] [2021-12-15 14:00:09,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611979326] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:09,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933658732] [2021-12-15 14:00:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:10,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:10,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:10,007 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:10,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-15 14:00:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:10,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-15 14:00:10,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-15 14:00:10,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-15 14:00:10,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933658732] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:10,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:10,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2021-12-15 14:00:10,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622231344] [2021-12-15 14:00:10,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:10,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-15 14:00:10,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:10,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-15 14:00:10,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-15 14:00:10,355 INFO L87 Difference]: Start difference. First operand 2854 states and 3845 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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) [2021-12-15 14:00:10,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:10,590 INFO L93 Difference]: Finished difference Result 3939 states and 5369 transitions. [2021-12-15 14:00:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 14:00:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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 65 [2021-12-15 14:00:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:10,609 INFO L225 Difference]: With dead ends: 3939 [2021-12-15 14:00:10,609 INFO L226 Difference]: Without dead ends: 3939 [2021-12-15 14:00:10,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-12-15 14:00:10,610 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 333 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:10,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 880 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-12-15 14:00:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 2136. [2021-12-15 14:00:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 2125 states have (on average 1.348235294117647) internal successors, (2865), 2135 states have internal predecessors, (2865), 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) [2021-12-15 14:00:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 2865 transitions. [2021-12-15 14:00:10,642 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 2865 transitions. Word has length 65 [2021-12-15 14:00:10,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:10,642 INFO L470 AbstractCegarLoop]: Abstraction has 2136 states and 2865 transitions. [2021-12-15 14:00:10,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 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) [2021-12-15 14:00:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 2865 transitions. [2021-12-15 14:00:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-15 14:00:10,657 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:10,657 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:10,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:10,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-15 14:00:10,875 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:10,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1937207539, now seen corresponding path program 1 times [2021-12-15 14:00:10,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:10,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321733450] [2021-12-15 14:00:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:10,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-15 14:00:10,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321733450] [2021-12-15 14:00:10,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321733450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994772275] [2021-12-15 14:00:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:10,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:10,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:10,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:10,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-15 14:00:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:11,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-15 14:00:11,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:11,060 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 [2021-12-15 14:00:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-15 14:00:11,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-15 14:00:11,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994772275] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:11,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:11,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-15 14:00:11,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378477299] [2021-12-15 14:00:11,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:11,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 14:00:11,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:11,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 14:00:11,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-15 14:00:11,549 INFO L87 Difference]: Start difference. First operand 2136 states and 2865 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 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) [2021-12-15 14:00:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:11,768 INFO L93 Difference]: Finished difference Result 3817 states and 5033 transitions. [2021-12-15 14:00:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 14:00:11,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 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 69 [2021-12-15 14:00:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:11,774 INFO L225 Difference]: With dead ends: 3817 [2021-12-15 14:00:11,774 INFO L226 Difference]: Without dead ends: 3817 [2021-12-15 14:00:11,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:11,775 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 397 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:11,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 499 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3817 states. [2021-12-15 14:00:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3817 to 3102. [2021-12-15 14:00:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 3091 states have (on average 1.3604011646716272) internal successors, (4205), 3101 states have internal predecessors, (4205), 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) [2021-12-15 14:00:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 4205 transitions. [2021-12-15 14:00:11,811 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 4205 transitions. Word has length 69 [2021-12-15 14:00:11,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:11,811 INFO L470 AbstractCegarLoop]: Abstraction has 3102 states and 4205 transitions. [2021-12-15 14:00:11,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 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) [2021-12-15 14:00:11,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 4205 transitions. [2021-12-15 14:00:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-15 14:00:11,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:11,813 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 8, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:11,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:12,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-15 14:00:12,023 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1779624174, now seen corresponding path program 1 times [2021-12-15 14:00:12,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:12,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505490936] [2021-12-15 14:00:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:12,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-12-15 14:00:12,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:12,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505490936] [2021-12-15 14:00:12,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505490936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:12,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:00:12,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 14:00:12,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114271267] [2021-12-15 14:00:12,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:12,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:00:12,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:00:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:12,063 INFO L87 Difference]: Start difference. First operand 3102 states and 4205 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-12-15 14:00:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:12,150 INFO L93 Difference]: Finished difference Result 7297 states and 9512 transitions. [2021-12-15 14:00:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 14:00:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 88 [2021-12-15 14:00:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:12,159 INFO L225 Difference]: With dead ends: 7297 [2021-12-15 14:00:12,159 INFO L226 Difference]: Without dead ends: 7297 [2021-12-15 14:00:12,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-15 14:00:12,160 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 196 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:12,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 404 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2021-12-15 14:00:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 3290. [2021-12-15 14:00:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3279 states have (on average 1.364135407136322) internal successors, (4473), 3289 states have internal predecessors, (4473), 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) [2021-12-15 14:00:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4473 transitions. [2021-12-15 14:00:12,208 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4473 transitions. Word has length 88 [2021-12-15 14:00:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:12,208 INFO L470 AbstractCegarLoop]: Abstraction has 3290 states and 4473 transitions. [2021-12-15 14:00:12,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-12-15 14:00:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4473 transitions. [2021-12-15 14:00:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-15 14:00:12,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:12,210 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 6, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:12,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-15 14:00:12,211 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:12,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1563813689, now seen corresponding path program 1 times [2021-12-15 14:00:12,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:12,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341660158] [2021-12-15 14:00:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:12,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 53 proven. 83 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-15 14:00:12,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:12,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341660158] [2021-12-15 14:00:12,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341660158] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:12,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391765715] [2021-12-15 14:00:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:12,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:12,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:12,266 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:12,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-15 14:00:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:12,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-15 14:00:12,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 117 proven. 57 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-15 14:00:12,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 117 proven. 57 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-15 14:00:12,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391765715] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:12,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:12,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 9 [2021-12-15 14:00:12,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573270901] [2021-12-15 14:00:12,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:12,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 14:00:12,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:12,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 14:00:12,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-15 14:00:12,631 INFO L87 Difference]: Start difference. First operand 3290 states and 4473 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 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) [2021-12-15 14:00:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:13,410 INFO L93 Difference]: Finished difference Result 17636 states and 21843 transitions. [2021-12-15 14:00:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-15 14:00:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 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 93 [2021-12-15 14:00:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:13,429 INFO L225 Difference]: With dead ends: 17636 [2021-12-15 14:00:13,429 INFO L226 Difference]: Without dead ends: 17636 [2021-12-15 14:00:13,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=617, Invalid=3543, Unknown=0, NotChecked=0, Total=4160 [2021-12-15 14:00:13,431 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1954 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:13,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 2218 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:00:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17636 states. [2021-12-15 14:00:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17636 to 7968. [2021-12-15 14:00:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7968 states, 7957 states have (on average 1.3236144275480708) internal successors, (10532), 7967 states have internal predecessors, (10532), 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) [2021-12-15 14:00:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7968 states to 7968 states and 10532 transitions. [2021-12-15 14:00:13,556 INFO L78 Accepts]: Start accepts. Automaton has 7968 states and 10532 transitions. Word has length 93 [2021-12-15 14:00:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:13,557 INFO L470 AbstractCegarLoop]: Abstraction has 7968 states and 10532 transitions. [2021-12-15 14:00:13,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 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) [2021-12-15 14:00:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 7968 states and 10532 transitions. [2021-12-15 14:00:13,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-15 14:00:13,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:13,561 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:13,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:13,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-15 14:00:13,775 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash -353808855, now seen corresponding path program 1 times [2021-12-15 14:00:13,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:13,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858470613] [2021-12-15 14:00:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:13,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 82 proven. 163 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-15 14:00:13,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:13,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858470613] [2021-12-15 14:00:13,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858470613] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:13,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745365951] [2021-12-15 14:00:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:13,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:13,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:13,827 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:13,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-15 14:00:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:13,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 14:00:13,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-12-15 14:00:14,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:00:14,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745365951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:00:14,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 14:00:14,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-15 14:00:14,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998700993] [2021-12-15 14:00:14,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:14,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:00:14,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:00:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:14,155 INFO L87 Difference]: Start difference. First operand 7968 states and 10532 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-12-15 14:00:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:14,189 INFO L93 Difference]: Finished difference Result 8869 states and 11411 transitions. [2021-12-15 14:00:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:00:14,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 102 [2021-12-15 14:00:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:14,211 INFO L225 Difference]: With dead ends: 8869 [2021-12-15 14:00:14,212 INFO L226 Difference]: Without dead ends: 8809 [2021-12-15 14:00:14,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:14,212 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 54 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:14,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8809 states. [2021-12-15 14:00:14,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8809 to 8008. [2021-12-15 14:00:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8008 states, 7997 states have (on average 1.3039889958734525) internal successors, (10428), 8007 states have internal predecessors, (10428), 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) [2021-12-15 14:00:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8008 states to 8008 states and 10428 transitions. [2021-12-15 14:00:14,310 INFO L78 Accepts]: Start accepts. Automaton has 8008 states and 10428 transitions. Word has length 102 [2021-12-15 14:00:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:14,311 INFO L470 AbstractCegarLoop]: Abstraction has 8008 states and 10428 transitions. [2021-12-15 14:00:14,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-12-15 14:00:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 8008 states and 10428 transitions. [2021-12-15 14:00:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-15 14:00:14,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:14,315 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 7, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:14,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:14,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:14,527 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1398070387, now seen corresponding path program 1 times [2021-12-15 14:00:14,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:14,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960487327] [2021-12-15 14:00:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:14,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 156 proven. 1 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-15 14:00:14,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:14,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960487327] [2021-12-15 14:00:14,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960487327] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:14,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053986587] [2021-12-15 14:00:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:14,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:14,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:14,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-15 14:00:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:14,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-15 14:00:14,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:14,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:15,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053986587] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:15,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:15,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2021-12-15 14:00:15,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46266919] [2021-12-15 14:00:15,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:15,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 14:00:15,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 14:00:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:15,076 INFO L87 Difference]: Start difference. First operand 8008 states and 10428 transitions. Second operand has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 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) [2021-12-15 14:00:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:15,168 INFO L93 Difference]: Finished difference Result 10761 states and 13202 transitions. [2021-12-15 14:00:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 14:00:15,169 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 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 103 [2021-12-15 14:00:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:15,180 INFO L225 Difference]: With dead ends: 10761 [2021-12-15 14:00:15,181 INFO L226 Difference]: Without dead ends: 10761 [2021-12-15 14:00:15,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2021-12-15 14:00:15,182 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 344 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:15,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1032 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10761 states. [2021-12-15 14:00:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10761 to 7164. [2021-12-15 14:00:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7164 states, 7153 states have (on average 1.2603103592898084) internal successors, (9015), 7163 states have internal predecessors, (9015), 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) [2021-12-15 14:00:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7164 states to 7164 states and 9015 transitions. [2021-12-15 14:00:15,287 INFO L78 Accepts]: Start accepts. Automaton has 7164 states and 9015 transitions. Word has length 103 [2021-12-15 14:00:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:15,287 INFO L470 AbstractCegarLoop]: Abstraction has 7164 states and 9015 transitions. [2021-12-15 14:00:15,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 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) [2021-12-15 14:00:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 7164 states and 9015 transitions. [2021-12-15 14:00:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-15 14:00:15,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:15,291 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:15,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:15,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-15 14:00:15,506 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:15,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:15,507 INFO L85 PathProgramCache]: Analyzing trace with hash -727668713, now seen corresponding path program 1 times [2021-12-15 14:00:15,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:15,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514580559] [2021-12-15 14:00:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:15,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 92 proven. 3 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-15 14:00:15,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:15,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514580559] [2021-12-15 14:00:15,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514580559] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:15,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392737161] [2021-12-15 14:00:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:15,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:15,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:15,579 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:15,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-15 14:00:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:15,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 14:00:15,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-15 14:00:15,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-15 14:00:16,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392737161] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:16,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:16,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2021-12-15 14:00:16,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150574925] [2021-12-15 14:00:16,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:16,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 14:00:16,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:16,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 14:00:16,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-15 14:00:16,013 INFO L87 Difference]: Start difference. First operand 7164 states and 9015 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 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) [2021-12-15 14:00:16,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:16,175 INFO L93 Difference]: Finished difference Result 4230 states and 5015 transitions. [2021-12-15 14:00:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 14:00:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 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 106 [2021-12-15 14:00:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:16,181 INFO L225 Difference]: With dead ends: 4230 [2021-12-15 14:00:16,181 INFO L226 Difference]: Without dead ends: 4230 [2021-12-15 14:00:16,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-12-15 14:00:16,182 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 466 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:16,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 1635 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2021-12-15 14:00:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 2200. [2021-12-15 14:00:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2190 states have (on average 1.2018264840182649) internal successors, (2632), 2199 states have internal predecessors, (2632), 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) [2021-12-15 14:00:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2632 transitions. [2021-12-15 14:00:16,208 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2632 transitions. Word has length 106 [2021-12-15 14:00:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:16,209 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 2632 transitions. [2021-12-15 14:00:16,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 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) [2021-12-15 14:00:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2632 transitions. [2021-12-15 14:00:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-15 14:00:16,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:16,211 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:16,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:16,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-15 14:00:16,428 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:16,428 INFO L85 PathProgramCache]: Analyzing trace with hash -932844676, now seen corresponding path program 1 times [2021-12-15 14:00:16,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:16,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233849404] [2021-12-15 14:00:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:16,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:16,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:16,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233849404] [2021-12-15 14:00:16,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233849404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:16,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042692380] [2021-12-15 14:00:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:16,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:16,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:16,517 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:16,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-15 14:00:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:16,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 14:00:16,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:16,646 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 [2021-12-15 14:00:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:16,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:16,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042692380] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:16,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:16,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-15 14:00:16,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621717345] [2021-12-15 14:00:16,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:16,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:00:16,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:16,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:00:16,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:16,988 INFO L87 Difference]: Start difference. First operand 2200 states and 2632 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-12-15 14:00:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:17,171 INFO L93 Difference]: Finished difference Result 3112 states and 3675 transitions. [2021-12-15 14:00:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 14:00:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 111 [2021-12-15 14:00:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:17,174 INFO L225 Difference]: With dead ends: 3112 [2021-12-15 14:00:17,174 INFO L226 Difference]: Without dead ends: 3112 [2021-12-15 14:00:17,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:17,175 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 322 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:17,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 408 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2021-12-15 14:00:17,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 2201. [2021-12-15 14:00:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2192 states have (on average 1.2020985401459854) internal successors, (2635), 2200 states have internal predecessors, (2635), 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) [2021-12-15 14:00:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 2635 transitions. [2021-12-15 14:00:17,198 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 2635 transitions. Word has length 111 [2021-12-15 14:00:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:17,198 INFO L470 AbstractCegarLoop]: Abstraction has 2201 states and 2635 transitions. [2021-12-15 14:00:17,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-12-15 14:00:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 2635 transitions. [2021-12-15 14:00:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-15 14:00:17,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:17,201 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:17,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-15 14:00:17,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-15 14:00:17,420 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:17,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:17,421 INFO L85 PathProgramCache]: Analyzing trace with hash -932844675, now seen corresponding path program 1 times [2021-12-15 14:00:17,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:17,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621599458] [2021-12-15 14:00:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:17,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:17,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:17,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621599458] [2021-12-15 14:00:17,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621599458] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:17,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743369282] [2021-12-15 14:00:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:17,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:17,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:17,492 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:17,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-15 14:00:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:17,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-15 14:00:17,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:17,619 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 [2021-12-15 14:00:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:18,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:18,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743369282] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:18,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:18,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2021-12-15 14:00:18,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997806339] [2021-12-15 14:00:18,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:18,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-15 14:00:18,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:18,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-15 14:00:18,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-15 14:00:18,466 INFO L87 Difference]: Start difference. First operand 2201 states and 2635 transitions. Second operand has 16 states, 15 states have (on average 12.2) internal successors, (183), 16 states have internal predecessors, (183), 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) [2021-12-15 14:00:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:19,049 INFO L93 Difference]: Finished difference Result 6394 states and 7590 transitions. [2021-12-15 14:00:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-15 14:00:19,049 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 12.2) internal successors, (183), 16 states have internal predecessors, (183), 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 111 [2021-12-15 14:00:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:19,053 INFO L225 Difference]: With dead ends: 6394 [2021-12-15 14:00:19,053 INFO L226 Difference]: Without dead ends: 6394 [2021-12-15 14:00:19,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=350, Invalid=910, Unknown=0, NotChecked=0, Total=1260 [2021-12-15 14:00:19,054 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 877 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:19,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 1110 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 14:00:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6394 states. [2021-12-15 14:00:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6394 to 2355. [2021-12-15 14:00:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2346 states have (on average 1.2075873827791985) internal successors, (2833), 2354 states have internal predecessors, (2833), 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) [2021-12-15 14:00:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 2833 transitions. [2021-12-15 14:00:19,080 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 2833 transitions. Word has length 111 [2021-12-15 14:00:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:19,080 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 2833 transitions. [2021-12-15 14:00:19,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 12.2) internal successors, (183), 16 states have internal predecessors, (183), 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) [2021-12-15 14:00:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 2833 transitions. [2021-12-15 14:00:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-15 14:00:19,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:19,083 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:19,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:19,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:19,298 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1146584722, now seen corresponding path program 1 times [2021-12-15 14:00:19,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:19,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279745489] [2021-12-15 14:00:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:19,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:19,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:19,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279745489] [2021-12-15 14:00:19,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279745489] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:19,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508926614] [2021-12-15 14:00:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:19,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:19,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:19,380 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:19,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-15 14:00:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:19,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 14:00:19,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:19,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:19,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508926614] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:19,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:19,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2021-12-15 14:00:19,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622862761] [2021-12-15 14:00:19,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:19,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:00:19,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:00:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:19,901 INFO L87 Difference]: Start difference. First operand 2355 states and 2833 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2021-12-15 14:00:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:20,059 INFO L93 Difference]: Finished difference Result 4517 states and 5380 transitions. [2021-12-15 14:00:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 14:00:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 112 [2021-12-15 14:00:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:20,064 INFO L225 Difference]: With dead ends: 4517 [2021-12-15 14:00:20,064 INFO L226 Difference]: Without dead ends: 4517 [2021-12-15 14:00:20,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:20,064 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 397 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:20,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 483 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2021-12-15 14:00:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 2355. [2021-12-15 14:00:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2346 states have (on average 1.2046035805626598) internal successors, (2826), 2354 states have internal predecessors, (2826), 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) [2021-12-15 14:00:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 2826 transitions. [2021-12-15 14:00:20,093 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 2826 transitions. Word has length 112 [2021-12-15 14:00:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:20,094 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 2826 transitions. [2021-12-15 14:00:20,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2021-12-15 14:00:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 2826 transitions. [2021-12-15 14:00:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-15 14:00:20,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:20,095 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:20,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:20,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:20,319 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1937224330, now seen corresponding path program 1 times [2021-12-15 14:00:20,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:20,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660319733] [2021-12-15 14:00:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:20,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:20,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:20,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660319733] [2021-12-15 14:00:20,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660319733] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:20,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141174563] [2021-12-15 14:00:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:20,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:20,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:20,383 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:20,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-15 14:00:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:20,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 14:00:20,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:20,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:20,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141174563] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:20,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:20,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-15 14:00:20,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527565320] [2021-12-15 14:00:20,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:20,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 14:00:20,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:20,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 14:00:20,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 14:00:20,827 INFO L87 Difference]: Start difference. First operand 2355 states and 2826 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-12-15 14:00:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:20,973 INFO L93 Difference]: Finished difference Result 4513 states and 5376 transitions. [2021-12-15 14:00:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 14:00:20,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 114 [2021-12-15 14:00:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:20,976 INFO L225 Difference]: With dead ends: 4513 [2021-12-15 14:00:20,977 INFO L226 Difference]: Without dead ends: 4513 [2021-12-15 14:00:20,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:20,977 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 510 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:20,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 266 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2021-12-15 14:00:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 2356. [2021-12-15 14:00:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2347 states have (on average 1.2045164039198977) internal successors, (2827), 2355 states have internal predecessors, (2827), 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) [2021-12-15 14:00:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 2827 transitions. [2021-12-15 14:00:20,998 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 2827 transitions. Word has length 114 [2021-12-15 14:00:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:20,998 INFO L470 AbstractCegarLoop]: Abstraction has 2356 states and 2827 transitions. [2021-12-15 14:00:20,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-12-15 14:00:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 2827 transitions. [2021-12-15 14:00:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-15 14:00:21,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:21,000 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:21,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:21,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-15 14:00:21,218 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash -374280255, now seen corresponding path program 1 times [2021-12-15 14:00:21,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:21,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353516443] [2021-12-15 14:00:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:21,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 20 proven. 257 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-15 14:00:21,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:21,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353516443] [2021-12-15 14:00:21,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353516443] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:21,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566640132] [2021-12-15 14:00:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:21,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:21,481 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:21,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-15 14:00:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:21,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-15 14:00:21,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:22,107 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 [2021-12-15 14:00:22,134 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 [2021-12-15 14:00:22,199 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:22,200 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 17 treesize of output 17 [2021-12-15 14:00:22,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:22,205 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 17 treesize of output 17 [2021-12-15 14:00:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 46 proven. 192 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:22,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:22,387 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 12 treesize of output 10 [2021-12-15 14:00:22,392 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 22 treesize of output 20 [2021-12-15 14:00:22,399 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 12 treesize of output 10 [2021-12-15 14:00:22,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:00:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 46 proven. 192 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:22,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566640132] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:22,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:22,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 18 [2021-12-15 14:00:22,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056613570] [2021-12-15 14:00:22,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:22,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-15 14:00:22,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-15 14:00:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-12-15 14:00:22,910 INFO L87 Difference]: Start difference. First operand 2356 states and 2827 transitions. Second operand has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 18 states have internal predecessors, (131), 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) [2021-12-15 14:00:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:23,613 INFO L93 Difference]: Finished difference Result 5023 states and 5939 transitions. [2021-12-15 14:00:23,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-15 14:00:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 18 states have internal predecessors, (131), 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 117 [2021-12-15 14:00:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:23,618 INFO L225 Difference]: With dead ends: 5023 [2021-12-15 14:00:23,618 INFO L226 Difference]: Without dead ends: 5023 [2021-12-15 14:00:23,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 219 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=1627, Unknown=0, NotChecked=0, Total=1980 [2021-12-15 14:00:23,619 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 555 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:23,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 1104 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 14:00:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2021-12-15 14:00:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 2918. [2021-12-15 14:00:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2909 states have (on average 1.2035063595737368) internal successors, (3501), 2917 states have internal predecessors, (3501), 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) [2021-12-15 14:00:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 3501 transitions. [2021-12-15 14:00:23,649 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 3501 transitions. Word has length 117 [2021-12-15 14:00:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:23,649 INFO L470 AbstractCegarLoop]: Abstraction has 2918 states and 3501 transitions. [2021-12-15 14:00:23,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 18 states have internal predecessors, (131), 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) [2021-12-15 14:00:23,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 3501 transitions. [2021-12-15 14:00:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-15 14:00:23,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:23,652 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 8, 7, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:23,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:23,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-15 14:00:23,863 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash 779532359, now seen corresponding path program 1 times [2021-12-15 14:00:23,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:23,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222305859] [2021-12-15 14:00:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:23,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 84 proven. 313 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 14:00:24,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:24,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222305859] [2021-12-15 14:00:24,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222305859] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:24,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255986463] [2021-12-15 14:00:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:24,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:24,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:24,047 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:24,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-15 14:00:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:24,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-15 14:00:24,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:24,439 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 [2021-12-15 14:00:24,448 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 [2021-12-15 14:00:24,753 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:24,753 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 26 treesize of output 22 [2021-12-15 14:00:24,761 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:24,761 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 17 treesize of output 17 [2021-12-15 14:00:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 80 proven. 317 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 14:00:25,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:26,025 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 43 treesize of output 39 [2021-12-15 14:00:26,033 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 39 treesize of output 37 [2021-12-15 14:00:26,036 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 69 treesize of output 61 [2021-12-15 14:00:26,039 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 77 treesize of output 73 [2021-12-15 14:00:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 76 proven. 321 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 14:00:26,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255986463] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:26,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:26,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2021-12-15 14:00:26,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679600428] [2021-12-15 14:00:26,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:26,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-15 14:00:26,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-15 14:00:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2021-12-15 14:00:26,486 INFO L87 Difference]: Start difference. First operand 2918 states and 3501 transitions. Second operand has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 25 states have internal predecessors, (230), 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) [2021-12-15 14:00:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:29,258 INFO L93 Difference]: Finished difference Result 15097 states and 17588 transitions. [2021-12-15 14:00:29,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-15 14:00:29,259 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 25 states have internal predecessors, (230), 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 117 [2021-12-15 14:00:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:29,272 INFO L225 Difference]: With dead ends: 15097 [2021-12-15 14:00:29,272 INFO L226 Difference]: Without dead ends: 15097 [2021-12-15 14:00:29,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 213 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1179, Invalid=6303, Unknown=0, NotChecked=0, Total=7482 [2021-12-15 14:00:29,274 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 2271 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:29,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 2789 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1087 Invalid, 0 Unknown, 127 Unchecked, 0.8s Time] [2021-12-15 14:00:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15097 states. [2021-12-15 14:00:29,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15097 to 8216. [2021-12-15 14:00:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8216 states, 8207 states have (on average 1.1947118313634701) internal successors, (9805), 8215 states have internal predecessors, (9805), 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) [2021-12-15 14:00:29,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8216 states to 8216 states and 9805 transitions. [2021-12-15 14:00:29,374 INFO L78 Accepts]: Start accepts. Automaton has 8216 states and 9805 transitions. Word has length 117 [2021-12-15 14:00:29,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:29,375 INFO L470 AbstractCegarLoop]: Abstraction has 8216 states and 9805 transitions. [2021-12-15 14:00:29,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 25 states have internal predecessors, (230), 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) [2021-12-15 14:00:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 8216 states and 9805 transitions. [2021-12-15 14:00:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-15 14:00:29,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:29,378 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:29,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-15 14:00:29,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:29,585 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:29,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1282212589, now seen corresponding path program 1 times [2021-12-15 14:00:29,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:29,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813894312] [2021-12-15 14:00:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:29,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:29,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:29,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813894312] [2021-12-15 14:00:29,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813894312] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:29,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100513103] [2021-12-15 14:00:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:29,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:29,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:29,684 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:29,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-15 14:00:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:29,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-15 14:00:29,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:30,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2021-12-15 14:00:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:30,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-15 14:00:30,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100513103] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:30,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:30,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 8 [2021-12-15 14:00:30,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763111682] [2021-12-15 14:00:30,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:30,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 14:00:30,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 14:00:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:00:30,700 INFO L87 Difference]: Start difference. First operand 8216 states and 9805 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 9 states have internal predecessors, (82), 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) [2021-12-15 14:00:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:30,993 INFO L93 Difference]: Finished difference Result 18831 states and 22418 transitions. [2021-12-15 14:00:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-15 14:00:30,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 9 states have internal predecessors, (82), 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 118 [2021-12-15 14:00:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:31,010 INFO L225 Difference]: With dead ends: 18831 [2021-12-15 14:00:31,010 INFO L226 Difference]: Without dead ends: 18813 [2021-12-15 14:00:31,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 233 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-12-15 14:00:31,011 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 411 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:31,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 879 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 282 Invalid, 0 Unknown, 102 Unchecked, 0.2s Time] [2021-12-15 14:00:31,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2021-12-15 14:00:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 13945. [2021-12-15 14:00:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13945 states, 13936 states have (on average 1.1939580941446613) internal successors, (16639), 13944 states have internal predecessors, (16639), 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) [2021-12-15 14:00:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13945 states to 13945 states and 16639 transitions. [2021-12-15 14:00:31,158 INFO L78 Accepts]: Start accepts. Automaton has 13945 states and 16639 transitions. Word has length 118 [2021-12-15 14:00:31,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:31,158 INFO L470 AbstractCegarLoop]: Abstraction has 13945 states and 16639 transitions. [2021-12-15 14:00:31,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 9 states have internal predecessors, (82), 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) [2021-12-15 14:00:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 13945 states and 16639 transitions. [2021-12-15 14:00:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-15 14:00:31,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:31,164 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 8, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:31,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-15 14:00:31,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:31,379 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash -224880734, now seen corresponding path program 1 times [2021-12-15 14:00:31,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:31,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345411099] [2021-12-15 14:00:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:31,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 335 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-12-15 14:00:31,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:31,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345411099] [2021-12-15 14:00:31,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345411099] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:31,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139070065] [2021-12-15 14:00:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:31,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:31,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:31,439 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:31,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-15 14:00:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:31,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 14:00:31,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 335 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-12-15 14:00:31,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-12-15 14:00:31,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139070065] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:31,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-15 14:00:31,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 9 [2021-12-15 14:00:31,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015844127] [2021-12-15 14:00:31,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:00:31,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 14:00:31,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 14:00:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-15 14:00:31,960 INFO L87 Difference]: Start difference. First operand 13945 states and 16639 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2021-12-15 14:00:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:32,040 INFO L93 Difference]: Finished difference Result 10080 states and 11938 transitions. [2021-12-15 14:00:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 14:00:32,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 146 [2021-12-15 14:00:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:32,048 INFO L225 Difference]: With dead ends: 10080 [2021-12-15 14:00:32,048 INFO L226 Difference]: Without dead ends: 10080 [2021-12-15 14:00:32,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:32,049 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 162 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:32,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 451 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:00:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10080 states. [2021-12-15 14:00:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10080 to 8761. [2021-12-15 14:00:32,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8761 states, 8752 states have (on average 1.1835009140767825) internal successors, (10358), 8760 states have internal predecessors, (10358), 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) [2021-12-15 14:00:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8761 states to 8761 states and 10358 transitions. [2021-12-15 14:00:32,152 INFO L78 Accepts]: Start accepts. Automaton has 8761 states and 10358 transitions. Word has length 146 [2021-12-15 14:00:32,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:32,152 INFO L470 AbstractCegarLoop]: Abstraction has 8761 states and 10358 transitions. [2021-12-15 14:00:32,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2021-12-15 14:00:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 8761 states and 10358 transitions. [2021-12-15 14:00:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-15 14:00:32,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:32,157 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 14, 9, 9, 7, 6, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:32,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-15 14:00:32,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-15 14:00:32,357 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:32,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash 368256012, now seen corresponding path program 2 times [2021-12-15 14:00:32,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:32,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051399556] [2021-12-15 14:00:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:32,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 336 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-12-15 14:00:32,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:32,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051399556] [2021-12-15 14:00:32,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051399556] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:32,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474940126] [2021-12-15 14:00:32,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 14:00:32,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:32,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:32,420 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:32,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-15 14:00:32,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 14:00:32,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 14:00:32,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-15 14:00:32,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 291 proven. 109 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-15 14:00:32,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 291 proven. 109 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-15 14:00:33,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474940126] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:33,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:33,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-15 14:00:33,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747615712] [2021-12-15 14:00:33,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:33,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 14:00:33,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:33,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 14:00:33,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-15 14:00:33,049 INFO L87 Difference]: Start difference. First operand 8761 states and 10358 transitions. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 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) [2021-12-15 14:00:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:33,241 INFO L93 Difference]: Finished difference Result 10609 states and 12209 transitions. [2021-12-15 14:00:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-15 14:00:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 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 155 [2021-12-15 14:00:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:33,251 INFO L225 Difference]: With dead ends: 10609 [2021-12-15 14:00:33,251 INFO L226 Difference]: Without dead ends: 10609 [2021-12-15 14:00:33,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2021-12-15 14:00:33,251 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 905 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:33,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 1718 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 14:00:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2021-12-15 14:00:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 7447. [2021-12-15 14:00:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7447 states, 7438 states have (on average 1.1560903468674375) internal successors, (8599), 7446 states have internal predecessors, (8599), 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) [2021-12-15 14:00:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7447 states to 7447 states and 8599 transitions. [2021-12-15 14:00:33,365 INFO L78 Accepts]: Start accepts. Automaton has 7447 states and 8599 transitions. Word has length 155 [2021-12-15 14:00:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:33,366 INFO L470 AbstractCegarLoop]: Abstraction has 7447 states and 8599 transitions. [2021-12-15 14:00:33,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 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) [2021-12-15 14:00:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7447 states and 8599 transitions. [2021-12-15 14:00:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-15 14:00:33,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:33,370 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 10, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:33,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-15 14:00:33,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-15 14:00:33,571 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:33,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1761139834, now seen corresponding path program 1 times [2021-12-15 14:00:33,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:33,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89362567] [2021-12-15 14:00:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:33,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 104 proven. 679 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-15 14:00:33,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:33,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89362567] [2021-12-15 14:00:33,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89362567] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:33,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667898263] [2021-12-15 14:00:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:33,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:33,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:33,842 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:33,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-15 14:00:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:33,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-15 14:00:33,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:34,033 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 [2021-12-15 14:00:34,301 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 [2021-12-15 14:00:34,304 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 [2021-12-15 14:00:34,521 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:00:34,523 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 [2021-12-15 14:00:34,547 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 14 treesize of output 16 [2021-12-15 14:00:34,551 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 14 treesize of output 16 [2021-12-15 14:00:34,565 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 14 treesize of output 16 [2021-12-15 14:00:34,569 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 14 treesize of output 16 [2021-12-15 14:00:34,625 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 14 treesize of output 16 [2021-12-15 14:00:34,632 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 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 14:00:34,752 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 14 treesize of output 16 [2021-12-15 14:00:34,755 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 14 treesize of output 16 [2021-12-15 14:00:34,899 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:34,899 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 17 treesize of output 17 [2021-12-15 14:00:34,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:34,904 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 17 treesize of output 17 [2021-12-15 14:00:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 100 proven. 683 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-15 14:00:35,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:37,981 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:37,981 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 68 [2021-12-15 14:00:37,986 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:37,986 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 58 [2021-12-15 14:00:37,993 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:37,993 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 86 treesize of output 80 [2021-12-15 14:00:38,003 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:38,004 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 94 treesize of output 94 [2021-12-15 14:00:38,012 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 61 treesize of output 57 [2021-12-15 14:00:38,026 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 57 treesize of output 53 [2021-12-15 14:00:38,031 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 53 treesize of output 49 [2021-12-15 14:00:39,298 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 10 treesize of output 8 [2021-12-15 14:00:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 96 proven. 687 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-15 14:00:39,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667898263] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:39,329 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:39,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2021-12-15 14:00:39,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244995194] [2021-12-15 14:00:39,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:39,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-15 14:00:39,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-15 14:00:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=889, Unknown=1, NotChecked=0, Total=992 [2021-12-15 14:00:39,331 INFO L87 Difference]: Start difference. First operand 7447 states and 8599 transitions. Second operand has 32 states, 32 states have (on average 9.4375) internal successors, (302), 31 states have internal predecessors, (302), 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) [2021-12-15 14:00:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:44,031 INFO L93 Difference]: Finished difference Result 35166 states and 39954 transitions. [2021-12-15 14:00:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-12-15 14:00:44,031 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.4375) internal successors, (302), 31 states have internal predecessors, (302), 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 162 [2021-12-15 14:00:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:44,059 INFO L225 Difference]: With dead ends: 35166 [2021-12-15 14:00:44,059 INFO L226 Difference]: Without dead ends: 35166 [2021-12-15 14:00:44,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 310 SyntacticMatches, 9 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6484 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2789, Invalid=16950, Unknown=1, NotChecked=0, Total=19740 [2021-12-15 14:00:44,068 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 2432 mSDsluCounter, 4299 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 4584 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1374 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:44,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 4584 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1573 Invalid, 0 Unknown, 1374 Unchecked, 1.0s Time] [2021-12-15 14:00:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35166 states. [2021-12-15 14:00:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35166 to 13356. [2021-12-15 14:00:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13356 states, 13347 states have (on average 1.1522439499513) internal successors, (15379), 13355 states have internal predecessors, (15379), 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) [2021-12-15 14:00:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13356 states to 13356 states and 15379 transitions. [2021-12-15 14:00:44,269 INFO L78 Accepts]: Start accepts. Automaton has 13356 states and 15379 transitions. Word has length 162 [2021-12-15 14:00:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:44,269 INFO L470 AbstractCegarLoop]: Abstraction has 13356 states and 15379 transitions. [2021-12-15 14:00:44,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.4375) internal successors, (302), 31 states have internal predecessors, (302), 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) [2021-12-15 14:00:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 13356 states and 15379 transitions. [2021-12-15 14:00:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-15 14:00:44,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:44,274 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 10, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:44,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-15 14:00:44,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-15 14:00:44,475 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:44,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:44,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1850586310, now seen corresponding path program 2 times [2021-12-15 14:00:44,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:44,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68801770] [2021-12-15 14:00:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:44,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 104 proven. 685 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-15 14:00:44,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:44,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68801770] [2021-12-15 14:00:44,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68801770] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:44,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661970386] [2021-12-15 14:00:44,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 14:00:44,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:44,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:44,868 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:44,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-15 14:00:45,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 14:00:45,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 14:00:45,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-15 14:00:45,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:45,075 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 [2021-12-15 14:00:45,328 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 [2021-12-15 14:00:45,331 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 [2021-12-15 14:00:45,538 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:00:45,539 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 [2021-12-15 14:00:45,554 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 14 treesize of output 16 [2021-12-15 14:00:45,559 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 14 treesize of output 16 [2021-12-15 14:00:45,568 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 14 treesize of output 16 [2021-12-15 14:00:45,572 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 14 treesize of output 16 [2021-12-15 14:00:45,631 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 14 treesize of output 16 [2021-12-15 14:00:45,636 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 14 treesize of output 16 [2021-12-15 14:00:45,807 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 16 treesize of output 18 [2021-12-15 14:00:45,809 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 16 treesize of output 18 [2021-12-15 14:00:45,922 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 [2021-12-15 14:00:45,924 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 [2021-12-15 14:00:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 100 proven. 679 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-15 14:00:46,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 14:00:46,365 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1563 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| c_~x1~0.base v_ArrVal_1563) c_~t4~0.base) (+ c_~t4~0.offset 4)) 0)) (forall ((v_ArrVal_1562 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| c_~x1~0.base v_ArrVal_1562) c_~t4~0.base) (+ c_~t4~0.offset 4)) 0))) is different from false [2021-12-15 14:00:46,426 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1562 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| c_~x1~0.base v_ArrVal_1562) c_~S~0.base) (+ c_~S~0.offset 4)) 0)) (forall ((v_ArrVal_1563 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| c_~x1~0.base v_ArrVal_1563) c_~S~0.base) (+ c_~S~0.offset 4)) 0))) is different from false [2021-12-15 14:00:47,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:47,018 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-12-15 14:00:47,021 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:47,022 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2021-12-15 14:00:47,026 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 60 treesize of output 48 [2021-12-15 14:00:47,030 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 62 treesize of output 50 [2021-12-15 14:00:47,033 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 41 treesize of output 37 [2021-12-15 14:00:47,035 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 37 treesize of output 33 [2021-12-15 14:00:47,491 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 10 treesize of output 8 [2021-12-15 14:00:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 90 proven. 381 refuted. 0 times theorem prover too weak. 50 trivial. 308 not checked. [2021-12-15 14:00:47,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661970386] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 14:00:47,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 14:00:47,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 24 [2021-12-15 14:00:47,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213255334] [2021-12-15 14:00:47,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 14:00:47,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-15 14:00:47,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:00:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-15 14:00:47,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=449, Unknown=3, NotChecked=86, Total=600 [2021-12-15 14:00:47,522 INFO L87 Difference]: Start difference. First operand 13356 states and 15379 transitions. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 24 states have internal predecessors, (251), 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) [2021-12-15 14:00:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:00:52,911 INFO L93 Difference]: Finished difference Result 56991 states and 64702 transitions. [2021-12-15 14:00:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-12-15 14:00:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 24 states have internal predecessors, (251), 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 162 [2021-12-15 14:00:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:00:52,978 INFO L225 Difference]: With dead ends: 56991 [2021-12-15 14:00:52,978 INFO L226 Difference]: Without dead ends: 56991 [2021-12-15 14:00:52,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 306 SyntacticMatches, 17 SemanticMatches, 137 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 7025 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2170, Invalid=16404, Unknown=66, NotChecked=542, Total=19182 [2021-12-15 14:00:52,982 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 1558 mSDsluCounter, 6722 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 7241 SdHoareTripleChecker+Invalid, 5155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2685 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:00:52,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 7241 Invalid, 5155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2254 Invalid, 0 Unknown, 2685 Unchecked, 1.2s Time] [2021-12-15 14:00:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56991 states. [2021-12-15 14:00:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56991 to 31721. [2021-12-15 14:00:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31721 states, 31712 states have (on average 1.1466952573158427) internal successors, (36364), 31720 states have internal predecessors, (36364), 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) [2021-12-15 14:00:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31721 states to 31721 states and 36364 transitions. [2021-12-15 14:00:53,432 INFO L78 Accepts]: Start accepts. Automaton has 31721 states and 36364 transitions. Word has length 162 [2021-12-15 14:00:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:00:53,432 INFO L470 AbstractCegarLoop]: Abstraction has 31721 states and 36364 transitions. [2021-12-15 14:00:53,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 24 states have internal predecessors, (251), 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) [2021-12-15 14:00:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 31721 states and 36364 transitions. [2021-12-15 14:00:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-15 14:00:53,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:00:53,441 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 10, 10, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:00:53,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-15 14:00:53,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-15 14:00:53,642 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-15 14:00:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:00:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1229648570, now seen corresponding path program 3 times [2021-12-15 14:00:53,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:00:53,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232529414] [2021-12-15 14:00:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:00:53,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:00:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:00:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 104 proven. 681 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-15 14:00:54,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:00:54,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232529414] [2021-12-15 14:00:54,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232529414] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 14:00:54,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466255001] [2021-12-15 14:00:54,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 14:00:54,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 14:00:54,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:00:54,064 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 14:00:54,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-15 14:00:54,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-12-15 14:00:54,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 14:00:54,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-15 14:00:54,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:00:54,509 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 [2021-12-15 14:00:54,758 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 [2021-12-15 14:00:54,763 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 [2021-12-15 14:00:55,174 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 14:00:55,174 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 [2021-12-15 14:00:55,206 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 14 treesize of output 16 [2021-12-15 14:00:55,210 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 14 treesize of output 16 [2021-12-15 14:00:55,244 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 14 treesize of output 16 [2021-12-15 14:00:55,249 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 14 treesize of output 16 [2021-12-15 14:00:55,324 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 14 treesize of output 16 [2021-12-15 14:00:55,364 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 14 treesize of output 16 [2021-12-15 14:00:55,515 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 14 treesize of output 16 [2021-12-15 14:00:55,518 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 14 treesize of output 16 [2021-12-15 14:00:55,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:55,675 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 17 treesize of output 21 [2021-12-15 14:00:55,687 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 14:00:55,687 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 17 treesize of output 21 [2021-12-15 14:00:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 134 proven. 631 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-15 14:00:56,115 INFO L328 TraceCheckSpWp]: Computing backward predicates...