./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:59:09,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:59:09,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:59:09,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:59:09,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:59:09,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:59:09,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:59:09,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:59:09,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:59:09,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:59:09,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:59:09,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:59:09,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:59:09,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:59:09,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:59:09,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:59:09,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:59:09,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:59:09,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:59:09,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:59:09,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:59:09,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:59:09,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:59:09,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:59:09,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:59:09,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:59:09,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:59:09,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:59:09,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:59:09,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:59:09,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:59:09,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:59:09,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:59:09,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:59:09,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:59:09,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:59:09,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:59:09,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:59:09,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:59:09,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:59:09,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:59:09,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:59:09,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:59:09,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:59:09,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:59:09,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:59:09,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:59:09,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:59:09,480 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:59:09,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:59:09,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:59:09,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:59:09,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:59:09,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:59:09,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:59:09,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:59:09,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:59:09,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:59:09,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:59:09,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:59:09,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:59:09,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:59:09,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:59:09,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:59:09,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:59:09,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:59:09,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:59:09,484 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:59:09,484 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:59:09,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:59:09,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:59:09,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e [2021-11-06 16:59:09,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:59:09,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:59:09,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:59:09,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:59:09,691 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:59:09,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-06 16:59:09,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eabd40689/a336ac19d2a94778a2950148eb58a198/FLAG34a64deed [2021-11-06 16:59:10,286 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:59:10,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-06 16:59:10,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eabd40689/a336ac19d2a94778a2950148eb58a198/FLAG34a64deed [2021-11-06 16:59:10,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eabd40689/a336ac19d2a94778a2950148eb58a198 [2021-11-06 16:59:10,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:59:10,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:59:10,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:59:10,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:59:10,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:59:10,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:59:10" (1/1) ... [2021-11-06 16:59:10,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e16818d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:10, skipping insertion in model container [2021-11-06 16:59:10,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:59:10" (1/1) ... [2021-11-06 16:59:10,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:59:10,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:59:11,616 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2021-11-06 16:59:11,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:59:11,803 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:59:11,976 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2021-11-06 16:59:11,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:59:12,031 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:59:12,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12 WrapperNode [2021-11-06 16:59:12,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:59:12,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:59:12,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:59:12,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:59:12,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:59:12,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:59:12,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:59:12,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:59:12,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:59:12,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:59:12,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:59:12,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:59:12,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (1/1) ... [2021-11-06 16:59:12,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:59:12,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:59:12,516 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) [2021-11-06 16:59:12,522 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 [2021-11-06 16:59:12,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:59:12,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:59:12,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:59:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:59:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:59:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:59:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:59:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:59:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:59:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:59:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:59:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:59:22,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:59:22,528 INFO L299 CfgBuilder]: Removed 1477 assume(true) statements. [2021-11-06 16:59:22,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:59:22 BoogieIcfgContainer [2021-11-06 16:59:22,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:59:22,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:59:22,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:59:22,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:59:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:59:10" (1/3) ... [2021-11-06 16:59:22,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5ae934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:59:22, skipping insertion in model container [2021-11-06 16:59:22,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:59:12" (2/3) ... [2021-11-06 16:59:22,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5ae934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:59:22, skipping insertion in model container [2021-11-06 16:59:22,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:59:22" (3/3) ... [2021-11-06 16:59:22,538 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-06 16:59:22,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:59:22,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-06 16:59:22,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:59:22,586 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 16:59:22,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-06 16:59:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 1220 states, 1181 states have (on average 1.3742591024555462) internal successors, (1623), 1219 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 16:59:22,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:22,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:22,627 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:22,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash -285552863, now seen corresponding path program 1 times [2021-11-06 16:59:22,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:22,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186203969] [2021-11-06 16:59:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:22,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:23,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:23,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186203969] [2021-11-06 16:59:23,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186203969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:23,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:23,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:59:23,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503063730] [2021-11-06 16:59:23,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:59:23,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:59:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:59:23,097 INFO L87 Difference]: Start difference. First operand has 1220 states, 1181 states have (on average 1.3742591024555462) internal successors, (1623), 1219 states have internal predecessors, (1623), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:23,150 INFO L93 Difference]: Finished difference Result 2436 states and 3241 transitions. [2021-11-06 16:59:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:59:23,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2021-11-06 16:59:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:23,166 INFO L225 Difference]: With dead ends: 2436 [2021-11-06 16:59:23,166 INFO L226 Difference]: Without dead ends: 1211 [2021-11-06 16:59:23,177 INFO L786 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 [2021-11-06 16:59:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-06 16:59:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2021-11-06 16:59:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1173 states have (on average 1.3213981244671782) internal successors, (1550), 1210 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1550 transitions. [2021-11-06 16:59:23,248 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1550 transitions. Word has length 69 [2021-11-06 16:59:23,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:23,248 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 1550 transitions. [2021-11-06 16:59:23,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1550 transitions. [2021-11-06 16:59:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 16:59:23,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:23,250 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:23,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:59:23,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash 738566293, now seen corresponding path program 1 times [2021-11-06 16:59:23,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:23,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724116676] [2021-11-06 16:59:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:23,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:23,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:23,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724116676] [2021-11-06 16:59:23,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724116676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:23,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:23,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:59:23,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483806817] [2021-11-06 16:59:23,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:23,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:23,425 INFO L87 Difference]: Start difference. First operand 1211 states and 1550 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:25,613 INFO L93 Difference]: Finished difference Result 3478 states and 4477 transitions. [2021-11-06 16:59:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:25,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2021-11-06 16:59:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:25,621 INFO L225 Difference]: With dead ends: 3478 [2021-11-06 16:59:25,621 INFO L226 Difference]: Without dead ends: 2326 [2021-11-06 16:59:25,624 INFO L786 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 [2021-11-06 16:59:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2021-11-06 16:59:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 2262. [2021-11-06 16:59:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2224 states have (on average 1.330935251798561) internal successors, (2960), 2261 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2960 transitions. [2021-11-06 16:59:25,671 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2960 transitions. Word has length 69 [2021-11-06 16:59:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:25,672 INFO L470 AbstractCegarLoop]: Abstraction has 2262 states and 2960 transitions. [2021-11-06 16:59:25,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:25,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2960 transitions. [2021-11-06 16:59:25,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 16:59:25,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:25,673 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:25,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:59:25,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:25,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:25,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1296347891, now seen corresponding path program 1 times [2021-11-06 16:59:25,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:25,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694900950] [2021-11-06 16:59:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:25,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:25,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:25,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694900950] [2021-11-06 16:59:25,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694900950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:25,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:25,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:59:25,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339729096] [2021-11-06 16:59:25,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:25,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:25,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:25,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:25,835 INFO L87 Difference]: Start difference. First operand 2262 states and 2960 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:25,999 INFO L93 Difference]: Finished difference Result 5533 states and 7220 transitions. [2021-11-06 16:59:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-06 16:59:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:26,009 INFO L225 Difference]: With dead ends: 5533 [2021-11-06 16:59:26,009 INFO L226 Difference]: Without dead ends: 3330 [2021-11-06 16:59:26,013 INFO L786 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 [2021-11-06 16:59:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2021-11-06 16:59:26,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3278. [2021-11-06 16:59:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3240 states have (on average 1.3243827160493826) internal successors, (4291), 3277 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4291 transitions. [2021-11-06 16:59:26,078 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4291 transitions. Word has length 70 [2021-11-06 16:59:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:26,079 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 4291 transitions. [2021-11-06 16:59:26,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4291 transitions. [2021-11-06 16:59:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 16:59:26,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:26,080 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:26,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:59:26,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:26,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1722340521, now seen corresponding path program 1 times [2021-11-06 16:59:26,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:26,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165690001] [2021-11-06 16:59:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:26,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:26,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:26,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165690001] [2021-11-06 16:59:26,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165690001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:26,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:26,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:59:26,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440065873] [2021-11-06 16:59:26,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:26,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:26,233 INFO L87 Difference]: Start difference. First operand 3278 states and 4291 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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) [2021-11-06 16:59:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:26,315 INFO L93 Difference]: Finished difference Result 3278 states and 4291 transitions. [2021-11-06 16:59:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:26,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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 78 [2021-11-06 16:59:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:26,325 INFO L225 Difference]: With dead ends: 3278 [2021-11-06 16:59:26,326 INFO L226 Difference]: Without dead ends: 3276 [2021-11-06 16:59:26,328 INFO L786 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 [2021-11-06 16:59:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-11-06 16:59:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3276. [2021-11-06 16:59:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3239 states have (on average 1.3241741278172274) internal successors, (4289), 3275 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4289 transitions. [2021-11-06 16:59:26,406 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4289 transitions. Word has length 78 [2021-11-06 16:59:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:26,406 INFO L470 AbstractCegarLoop]: Abstraction has 3276 states and 4289 transitions. [2021-11-06 16:59:26,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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) [2021-11-06 16:59:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4289 transitions. [2021-11-06 16:59:26,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 16:59:26,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:26,407 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:26,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:59:26,408 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:26,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1985561284, now seen corresponding path program 1 times [2021-11-06 16:59:26,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:26,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725411312] [2021-11-06 16:59:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:26,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:26,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:26,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725411312] [2021-11-06 16:59:26,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725411312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:26,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:26,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:59:26,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653367740] [2021-11-06 16:59:26,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:26,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:26,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:26,531 INFO L87 Difference]: Start difference. First operand 3276 states and 4289 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2021-11-06 16:59:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:26,692 INFO L93 Difference]: Finished difference Result 8130 states and 10734 transitions. [2021-11-06 16:59:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:26,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 78 [2021-11-06 16:59:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:26,707 INFO L225 Difference]: With dead ends: 8130 [2021-11-06 16:59:26,707 INFO L226 Difference]: Without dead ends: 4913 [2021-11-06 16:59:26,712 INFO L786 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 [2021-11-06 16:59:26,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2021-11-06 16:59:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 4860. [2021-11-06 16:59:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4860 states, 4823 states have (on average 1.3421107194692101) internal successors, (6473), 4859 states have internal predecessors, (6473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 6473 transitions. [2021-11-06 16:59:26,824 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 6473 transitions. Word has length 78 [2021-11-06 16:59:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:26,824 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 6473 transitions. [2021-11-06 16:59:26,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2021-11-06 16:59:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 6473 transitions. [2021-11-06 16:59:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 16:59:26,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:26,825 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:26,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:59:26,826 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1852958457, now seen corresponding path program 1 times [2021-11-06 16:59:26,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:26,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827604542] [2021-11-06 16:59:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:26,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:26,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:26,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827604542] [2021-11-06 16:59:26,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827604542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:26,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:26,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:59:26,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497670527] [2021-11-06 16:59:26,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:26,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:26,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:26,951 INFO L87 Difference]: Start difference. First operand 4860 states and 6473 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 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) [2021-11-06 16:59:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:27,023 INFO L93 Difference]: Finished difference Result 4860 states and 6473 transitions. [2021-11-06 16:59:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 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) Word has length 79 [2021-11-06 16:59:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:27,037 INFO L225 Difference]: With dead ends: 4860 [2021-11-06 16:59:27,037 INFO L226 Difference]: Without dead ends: 4858 [2021-11-06 16:59:27,039 INFO L786 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 [2021-11-06 16:59:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2021-11-06 16:59:27,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4858. [2021-11-06 16:59:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4822 states have (on average 1.341974284529241) internal successors, (6471), 4857 states have internal predecessors, (6471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 6471 transitions. [2021-11-06 16:59:27,206 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 6471 transitions. Word has length 79 [2021-11-06 16:59:27,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:27,207 INFO L470 AbstractCegarLoop]: Abstraction has 4858 states and 6471 transitions. [2021-11-06 16:59:27,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 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) [2021-11-06 16:59:27,207 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 6471 transitions. [2021-11-06 16:59:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 16:59:27,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:27,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:27,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:59:27,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:27,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1607147187, now seen corresponding path program 1 times [2021-11-06 16:59:27,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:27,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809628412] [2021-11-06 16:59:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:27,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:27,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:27,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809628412] [2021-11-06 16:59:27,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809628412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:27,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:27,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:59:27,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138589629] [2021-11-06 16:59:27,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:27,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:27,369 INFO L87 Difference]: Start difference. First operand 4858 states and 6471 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 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) [2021-11-06 16:59:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:27,452 INFO L93 Difference]: Finished difference Result 4858 states and 6471 transitions. [2021-11-06 16:59:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:27,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 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 80 [2021-11-06 16:59:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:27,465 INFO L225 Difference]: With dead ends: 4858 [2021-11-06 16:59:27,465 INFO L226 Difference]: Without dead ends: 4856 [2021-11-06 16:59:27,467 INFO L786 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 [2021-11-06 16:59:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2021-11-06 16:59:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2021-11-06 16:59:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4821 states have (on average 1.3418377929890064) internal successors, (6469), 4855 states have internal predecessors, (6469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 6469 transitions. [2021-11-06 16:59:27,598 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 6469 transitions. Word has length 80 [2021-11-06 16:59:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:27,598 INFO L470 AbstractCegarLoop]: Abstraction has 4856 states and 6469 transitions. [2021-11-06 16:59:27,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 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) [2021-11-06 16:59:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 6469 transitions. [2021-11-06 16:59:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 16:59:27,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:27,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:27,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 16:59:27,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:27,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1718034877, now seen corresponding path program 1 times [2021-11-06 16:59:27,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:27,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063917140] [2021-11-06 16:59:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:27,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:27,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:27,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063917140] [2021-11-06 16:59:27,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063917140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:27,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:27,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:59:27,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327196725] [2021-11-06 16:59:27,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:27,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:27,743 INFO L87 Difference]: Start difference. First operand 4856 states and 6469 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:28,014 INFO L93 Difference]: Finished difference Result 13984 states and 18732 transitions. [2021-11-06 16:59:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:28,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-06 16:59:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:28,049 INFO L225 Difference]: With dead ends: 13984 [2021-11-06 16:59:28,049 INFO L226 Difference]: Without dead ends: 9187 [2021-11-06 16:59:28,058 INFO L786 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 [2021-11-06 16:59:28,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9187 states. [2021-11-06 16:59:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9187 to 8870. [2021-11-06 16:59:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 8835 states have (on average 1.3475947934352008) internal successors, (11906), 8869 states have internal predecessors, (11906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 11906 transitions. [2021-11-06 16:59:28,258 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 11906 transitions. Word has length 81 [2021-11-06 16:59:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:28,258 INFO L470 AbstractCegarLoop]: Abstraction has 8870 states and 11906 transitions. [2021-11-06 16:59:28,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 11906 transitions. [2021-11-06 16:59:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 16:59:28,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:28,259 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:28,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 16:59:28,259 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1719463747, now seen corresponding path program 1 times [2021-11-06 16:59:28,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:28,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68332326] [2021-11-06 16:59:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:28,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:28,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:28,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68332326] [2021-11-06 16:59:28,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68332326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:28,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:28,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:59:28,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812896151] [2021-11-06 16:59:28,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:28,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:28,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:28,405 INFO L87 Difference]: Start difference. First operand 8870 states and 11906 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 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) [2021-11-06 16:59:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:28,643 INFO L93 Difference]: Finished difference Result 8870 states and 11906 transitions. [2021-11-06 16:59:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 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 82 [2021-11-06 16:59:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:28,660 INFO L225 Difference]: With dead ends: 8870 [2021-11-06 16:59:28,660 INFO L226 Difference]: Without dead ends: 8860 [2021-11-06 16:59:28,667 INFO L786 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 [2021-11-06 16:59:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2021-11-06 16:59:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8860. [2021-11-06 16:59:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8860 states, 8830 states have (on average 1.3440543601359003) internal successors, (11868), 8859 states have internal predecessors, (11868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8860 states to 8860 states and 11868 transitions. [2021-11-06 16:59:28,890 INFO L78 Accepts]: Start accepts. Automaton has 8860 states and 11868 transitions. Word has length 82 [2021-11-06 16:59:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:28,890 INFO L470 AbstractCegarLoop]: Abstraction has 8860 states and 11868 transitions. [2021-11-06 16:59:28,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 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) [2021-11-06 16:59:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8860 states and 11868 transitions. [2021-11-06 16:59:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 16:59:28,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:28,892 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:28,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 16:59:28,892 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1763758707, now seen corresponding path program 1 times [2021-11-06 16:59:28,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:28,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537611091] [2021-11-06 16:59:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:28,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:29,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:29,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537611091] [2021-11-06 16:59:29,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537611091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:29,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:29,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:59:29,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803244147] [2021-11-06 16:59:29,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:29,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:29,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:29,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:29,035 INFO L87 Difference]: Start difference. First operand 8860 states and 11868 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 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) [2021-11-06 16:59:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:29,457 INFO L93 Difference]: Finished difference Result 25366 states and 34162 transitions. [2021-11-06 16:59:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:29,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 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 83 [2021-11-06 16:59:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:29,489 INFO L225 Difference]: With dead ends: 25366 [2021-11-06 16:59:29,489 INFO L226 Difference]: Without dead ends: 16557 [2021-11-06 16:59:29,506 INFO L786 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 [2021-11-06 16:59:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16557 states. [2021-11-06 16:59:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16557 to 15601. [2021-11-06 16:59:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15601 states, 15571 states have (on average 1.3482756406139618) internal successors, (20994), 15600 states have internal predecessors, (20994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15601 states to 15601 states and 20994 transitions. [2021-11-06 16:59:29,960 INFO L78 Accepts]: Start accepts. Automaton has 15601 states and 20994 transitions. Word has length 83 [2021-11-06 16:59:29,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:29,960 INFO L470 AbstractCegarLoop]: Abstraction has 15601 states and 20994 transitions. [2021-11-06 16:59:29,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 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) [2021-11-06 16:59:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 15601 states and 20994 transitions. [2021-11-06 16:59:29,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 16:59:29,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:29,963 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:29,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 16:59:29,964 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1396152886, now seen corresponding path program 1 times [2021-11-06 16:59:29,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:29,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687152403] [2021-11-06 16:59:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:29,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:30,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:30,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687152403] [2021-11-06 16:59:30,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687152403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:30,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:30,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:59:30,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86926471] [2021-11-06 16:59:30,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:30,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:30,098 INFO L87 Difference]: Start difference. First operand 15601 states and 20994 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:32,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:32,468 INFO L93 Difference]: Finished difference Result 23722 states and 31907 transitions. [2021-11-06 16:59:32,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:32,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-06 16:59:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:32,485 INFO L225 Difference]: With dead ends: 23722 [2021-11-06 16:59:32,486 INFO L226 Difference]: Without dead ends: 8178 [2021-11-06 16:59:32,504 INFO L786 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 [2021-11-06 16:59:32,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2021-11-06 16:59:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 8121. [2021-11-06 16:59:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8121 states, 8091 states have (on average 1.3486590038314177) internal successors, (10912), 8120 states have internal predecessors, (10912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8121 states to 8121 states and 10912 transitions. [2021-11-06 16:59:32,765 INFO L78 Accepts]: Start accepts. Automaton has 8121 states and 10912 transitions. Word has length 104 [2021-11-06 16:59:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:32,766 INFO L470 AbstractCegarLoop]: Abstraction has 8121 states and 10912 transitions. [2021-11-06 16:59:32,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 8121 states and 10912 transitions. [2021-11-06 16:59:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 16:59:32,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:32,769 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:32,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 16:59:32,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:32,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1117139244, now seen corresponding path program 1 times [2021-11-06 16:59:32,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:32,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058194061] [2021-11-06 16:59:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:32,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:32,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:32,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058194061] [2021-11-06 16:59:32,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058194061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:32,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:32,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:59:32,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38041483] [2021-11-06 16:59:32,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:32,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:32,913 INFO L87 Difference]: Start difference. First operand 8121 states and 10912 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:35,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:35,372 INFO L93 Difference]: Finished difference Result 18536 states and 24974 transitions. [2021-11-06 16:59:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:35,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-06 16:59:35,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:35,394 INFO L225 Difference]: With dead ends: 18536 [2021-11-06 16:59:35,394 INFO L226 Difference]: Without dead ends: 10597 [2021-11-06 16:59:35,406 INFO L786 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 [2021-11-06 16:59:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10597 states. [2021-11-06 16:59:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10597 to 10500. [2021-11-06 16:59:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10500 states, 10470 states have (on average 1.3476599808978031) internal successors, (14110), 10499 states have internal predecessors, (14110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10500 states to 10500 states and 14110 transitions. [2021-11-06 16:59:35,712 INFO L78 Accepts]: Start accepts. Automaton has 10500 states and 14110 transitions. Word has length 107 [2021-11-06 16:59:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:35,712 INFO L470 AbstractCegarLoop]: Abstraction has 10500 states and 14110 transitions. [2021-11-06 16:59:35,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10500 states and 14110 transitions. [2021-11-06 16:59:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 16:59:35,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:35,715 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:35,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 16:59:35,716 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2065523523, now seen corresponding path program 1 times [2021-11-06 16:59:35,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:35,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898900143] [2021-11-06 16:59:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:35,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:59:35,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:35,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898900143] [2021-11-06 16:59:35,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898900143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:35,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:35,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:59:35,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262627600] [2021-11-06 16:59:35,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:35,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:35,858 INFO L87 Difference]: Start difference. First operand 10500 states and 14110 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:38,240 INFO L93 Difference]: Finished difference Result 10500 states and 14110 transitions. [2021-11-06 16:59:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-06 16:59:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:38,261 INFO L225 Difference]: With dead ends: 10500 [2021-11-06 16:59:38,261 INFO L226 Difference]: Without dead ends: 10492 [2021-11-06 16:59:38,266 INFO L786 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 [2021-11-06 16:59:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10492 states. [2021-11-06 16:59:38,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10492 to 10492. [2021-11-06 16:59:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10492 states, 10466 states have (on average 1.3460729982801451) internal successors, (14088), 10491 states have internal predecessors, (14088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10492 states to 10492 states and 14088 transitions. [2021-11-06 16:59:38,493 INFO L78 Accepts]: Start accepts. Automaton has 10492 states and 14088 transitions. Word has length 110 [2021-11-06 16:59:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:38,493 INFO L470 AbstractCegarLoop]: Abstraction has 10492 states and 14088 transitions. [2021-11-06 16:59:38,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 10492 states and 14088 transitions. [2021-11-06 16:59:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 16:59:38,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:38,495 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:38,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 16:59:38,496 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2018589685, now seen corresponding path program 1 times [2021-11-06 16:59:38,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:38,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88839785] [2021-11-06 16:59:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:38,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:59:38,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:38,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88839785] [2021-11-06 16:59:38,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88839785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:38,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:38,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:59:38,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756565760] [2021-11-06 16:59:38,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:38,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:38,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:38,620 INFO L87 Difference]: Start difference. First operand 10492 states and 14088 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:41,099 INFO L93 Difference]: Finished difference Result 24373 states and 32936 transitions. [2021-11-06 16:59:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:41,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 [2021-11-06 16:59:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:41,127 INFO L225 Difference]: With dead ends: 24373 [2021-11-06 16:59:41,127 INFO L226 Difference]: Without dead ends: 14063 [2021-11-06 16:59:41,144 INFO L786 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 [2021-11-06 16:59:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14063 states. [2021-11-06 16:59:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14063 to 13806. [2021-11-06 16:59:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13806 states, 13780 states have (on average 1.3558055152394775) internal successors, (18683), 13805 states have internal predecessors, (18683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 18683 transitions. [2021-11-06 16:59:41,418 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 18683 transitions. Word has length 112 [2021-11-06 16:59:41,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:41,419 INFO L470 AbstractCegarLoop]: Abstraction has 13806 states and 18683 transitions. [2021-11-06 16:59:41,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 18683 transitions. [2021-11-06 16:59:41,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 16:59:41,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:41,421 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:41,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 16:59:41,422 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:41,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:41,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1903864005, now seen corresponding path program 1 times [2021-11-06 16:59:41,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:41,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288069312] [2021-11-06 16:59:41,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:41,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:59:41,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:41,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288069312] [2021-11-06 16:59:41,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288069312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:41,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:41,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:59:41,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915611027] [2021-11-06 16:59:41,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:59:41,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:59:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:59:41,548 INFO L87 Difference]: Start difference. First operand 13806 states and 18683 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:44,115 INFO L93 Difference]: Finished difference Result 27522 states and 37251 transitions. [2021-11-06 16:59:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:59:44,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-06 16:59:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:44,139 INFO L225 Difference]: With dead ends: 27522 [2021-11-06 16:59:44,139 INFO L226 Difference]: Without dead ends: 13898 [2021-11-06 16:59:44,157 INFO L786 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 [2021-11-06 16:59:44,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13898 states. [2021-11-06 16:59:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13898 to 13560. [2021-11-06 16:59:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 13538 states have (on average 1.3547052740434333) internal successors, (18340), 13559 states have internal predecessors, (18340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 18340 transitions. [2021-11-06 16:59:44,434 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 18340 transitions. Word has length 119 [2021-11-06 16:59:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:44,434 INFO L470 AbstractCegarLoop]: Abstraction has 13560 states and 18340 transitions. [2021-11-06 16:59:44,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 18340 transitions. [2021-11-06 16:59:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 16:59:44,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:44,437 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:44,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 16:59:44,438 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:44,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:44,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2108460640, now seen corresponding path program 1 times [2021-11-06 16:59:44,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:44,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502898852] [2021-11-06 16:59:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:44,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:59:44,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:44,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502898852] [2021-11-06 16:59:44,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502898852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:44,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:44,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:59:44,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008065093] [2021-11-06 16:59:44,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:59:44,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:44,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:59:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:59:44,714 INFO L87 Difference]: Start difference. First operand 13560 states and 18340 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:45,926 INFO L93 Difference]: Finished difference Result 62446 states and 84560 transitions. [2021-11-06 16:59:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 16:59:45,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-06 16:59:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:46,013 INFO L225 Difference]: With dead ends: 62446 [2021-11-06 16:59:46,014 INFO L226 Difference]: Without dead ends: 49068 [2021-11-06 16:59:46,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:59:46,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49068 states. [2021-11-06 16:59:46,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49068 to 13480. [2021-11-06 16:59:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13480 states, 13462 states have (on average 1.3535878769870748) internal successors, (18222), 13479 states have internal predecessors, (18222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13480 states to 13480 states and 18222 transitions. [2021-11-06 16:59:46,729 INFO L78 Accepts]: Start accepts. Automaton has 13480 states and 18222 transitions. Word has length 119 [2021-11-06 16:59:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:46,730 INFO L470 AbstractCegarLoop]: Abstraction has 13480 states and 18222 transitions. [2021-11-06 16:59:46,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 13480 states and 18222 transitions. [2021-11-06 16:59:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 16:59:46,733 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:46,733 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:46,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 16:59:46,733 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2076200530, now seen corresponding path program 1 times [2021-11-06 16:59:46,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:46,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416092539] [2021-11-06 16:59:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:46,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:59:46,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:46,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416092539] [2021-11-06 16:59:46,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416092539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:46,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:46,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:59:46,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814981826] [2021-11-06 16:59:46,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:59:46,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:46,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:59:46,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:59:46,921 INFO L87 Difference]: Start difference. First operand 13480 states and 18222 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:49,663 INFO L93 Difference]: Finished difference Result 31941 states and 43094 transitions. [2021-11-06 16:59:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 16:59:49,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 124 [2021-11-06 16:59:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:49,697 INFO L225 Difference]: With dead ends: 31941 [2021-11-06 16:59:49,697 INFO L226 Difference]: Without dead ends: 18643 [2021-11-06 16:59:49,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 16:59:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18643 states. [2021-11-06 16:59:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18643 to 13516. [2021-11-06 16:59:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13516 states, 13498 states have (on average 1.3526448362720402) internal successors, (18258), 13515 states have internal predecessors, (18258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 18258 transitions. [2021-11-06 16:59:50,273 INFO L78 Accepts]: Start accepts. Automaton has 13516 states and 18258 transitions. Word has length 124 [2021-11-06 16:59:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:50,274 INFO L470 AbstractCegarLoop]: Abstraction has 13516 states and 18258 transitions. [2021-11-06 16:59:50,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 13516 states and 18258 transitions. [2021-11-06 16:59:50,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 16:59:50,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:50,278 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:50,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 16:59:50,278 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1611362309, now seen corresponding path program 1 times [2021-11-06 16:59:50,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:50,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165253592] [2021-11-06 16:59:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:50,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:59:50,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:50,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165253592] [2021-11-06 16:59:50,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165253592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:50,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:50,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:59:50,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010045407] [2021-11-06 16:59:50,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:59:50,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:50,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:59:50,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:59:50,423 INFO L87 Difference]: Start difference. First operand 13516 states and 18258 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 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) [2021-11-06 16:59:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:51,882 INFO L93 Difference]: Finished difference Result 50906 states and 68846 transitions. [2021-11-06 16:59:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:59:51,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 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 133 [2021-11-06 16:59:51,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:51,946 INFO L225 Difference]: With dead ends: 50906 [2021-11-06 16:59:51,946 INFO L226 Difference]: Without dead ends: 37572 [2021-11-06 16:59:51,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:59:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37572 states. [2021-11-06 16:59:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37572 to 13516. [2021-11-06 16:59:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13516 states, 13498 states have (on average 1.3517558156763965) internal successors, (18246), 13515 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 18246 transitions. [2021-11-06 16:59:52,684 INFO L78 Accepts]: Start accepts. Automaton has 13516 states and 18246 transitions. Word has length 133 [2021-11-06 16:59:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:52,684 INFO L470 AbstractCegarLoop]: Abstraction has 13516 states and 18246 transitions. [2021-11-06 16:59:52,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 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) [2021-11-06 16:59:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 13516 states and 18246 transitions. [2021-11-06 16:59:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-06 16:59:52,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:52,688 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:52,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 16:59:52,689 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:52,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1238562486, now seen corresponding path program 1 times [2021-11-06 16:59:52,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:52,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019072447] [2021-11-06 16:59:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:52,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:59:52,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:52,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019072447] [2021-11-06 16:59:52,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019072447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:52,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:52,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 16:59:52,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363187880] [2021-11-06 16:59:52,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 16:59:52,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:52,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 16:59:52,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:59:52,933 INFO L87 Difference]: Start difference. First operand 13516 states and 18246 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:59:56,219 INFO L93 Difference]: Finished difference Result 36120 states and 48630 transitions. [2021-11-06 16:59:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 16:59:56,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 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 134 [2021-11-06 16:59:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:59:56,258 INFO L225 Difference]: With dead ends: 36120 [2021-11-06 16:59:56,258 INFO L226 Difference]: Without dead ends: 22786 [2021-11-06 16:59:56,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-11-06 16:59:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22786 states. [2021-11-06 16:59:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22786 to 13708. [2021-11-06 16:59:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13708 states, 13690 states have (on average 1.3468224981738495) internal successors, (18438), 13707 states have internal predecessors, (18438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 18438 transitions. [2021-11-06 16:59:56,936 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 18438 transitions. Word has length 134 [2021-11-06 16:59:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:59:56,936 INFO L470 AbstractCegarLoop]: Abstraction has 13708 states and 18438 transitions. [2021-11-06 16:59:56,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:59:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 18438 transitions. [2021-11-06 16:59:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 16:59:56,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:59:56,939 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:59:56,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 16:59:56,939 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 16:59:56,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:59:56,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1927566436, now seen corresponding path program 1 times [2021-11-06 16:59:56,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:59:56,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830683747] [2021-11-06 16:59:56,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:59:56,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:59:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:59:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:59:57,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:59:57,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830683747] [2021-11-06 16:59:57,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830683747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:59:57,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:59:57,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:59:57,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398065505] [2021-11-06 16:59:57,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:59:57,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:59:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:59:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:59:57,110 INFO L87 Difference]: Start difference. First operand 13708 states and 18438 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:00,124 INFO L93 Difference]: Finished difference Result 32467 states and 43530 transitions. [2021-11-06 17:00:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:00:00,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 137 [2021-11-06 17:00:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:00,150 INFO L225 Difference]: With dead ends: 32467 [2021-11-06 17:00:00,151 INFO L226 Difference]: Without dead ends: 18941 [2021-11-06 17:00:00,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:00:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18941 states. [2021-11-06 17:00:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18941 to 13792. [2021-11-06 17:00:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13792 states, 13774 states have (on average 1.3447074197763904) internal successors, (18522), 13791 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13792 states to 13792 states and 18522 transitions. [2021-11-06 17:00:00,752 INFO L78 Accepts]: Start accepts. Automaton has 13792 states and 18522 transitions. Word has length 137 [2021-11-06 17:00:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:00,753 INFO L470 AbstractCegarLoop]: Abstraction has 13792 states and 18522 transitions. [2021-11-06 17:00:00,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 13792 states and 18522 transitions. [2021-11-06 17:00:00,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-06 17:00:00,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:00,755 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:00,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 17:00:00,756 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:00,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2043300210, now seen corresponding path program 1 times [2021-11-06 17:00:00,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:00,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231814460] [2021-11-06 17:00:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:00,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:00,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:00,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231814460] [2021-11-06 17:00:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231814460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:00,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:00,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:00:00,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405974893] [2021-11-06 17:00:00,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:00:00,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:00:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:00:00,932 INFO L87 Difference]: Start difference. First operand 13792 states and 18522 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 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) [2021-11-06 17:00:04,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:04,169 INFO L93 Difference]: Finished difference Result 32629 states and 43686 transitions. [2021-11-06 17:00:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:00:04,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 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) Word has length 141 [2021-11-06 17:00:04,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:04,198 INFO L225 Difference]: With dead ends: 32629 [2021-11-06 17:00:04,198 INFO L226 Difference]: Without dead ends: 19019 [2021-11-06 17:00:04,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:00:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19019 states. [2021-11-06 17:00:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19019 to 13750. [2021-11-06 17:00:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13750 states, 13732 states have (on average 1.345324788814448) internal successors, (18474), 13749 states have internal predecessors, (18474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13750 states to 13750 states and 18474 transitions. [2021-11-06 17:00:04,844 INFO L78 Accepts]: Start accepts. Automaton has 13750 states and 18474 transitions. Word has length 141 [2021-11-06 17:00:04,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:04,844 INFO L470 AbstractCegarLoop]: Abstraction has 13750 states and 18474 transitions. [2021-11-06 17:00:04,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 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) [2021-11-06 17:00:04,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13750 states and 18474 transitions. [2021-11-06 17:00:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-06 17:00:04,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:04,847 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:04,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 17:00:04,847 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash 66774099, now seen corresponding path program 1 times [2021-11-06 17:00:04,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:04,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415688577] [2021-11-06 17:00:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:04,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 17:00:05,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:05,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415688577] [2021-11-06 17:00:05,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415688577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:05,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:05,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:00:05,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642376624] [2021-11-06 17:00:05,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:00:05,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:05,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:00:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:00:05,072 INFO L87 Difference]: Start difference. First operand 13750 states and 18474 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:06,624 INFO L93 Difference]: Finished difference Result 32445 states and 43593 transitions. [2021-11-06 17:00:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:06,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 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 154 [2021-11-06 17:00:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:06,671 INFO L225 Difference]: With dead ends: 32445 [2021-11-06 17:00:06,672 INFO L226 Difference]: Without dead ends: 32355 [2021-11-06 17:00:06,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:00:06,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32355 states. [2021-11-06 17:00:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32355 to 13662. [2021-11-06 17:00:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13662 states, 13644 states have (on average 1.3446936382292582) internal successors, (18347), 13661 states have internal predecessors, (18347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13662 states to 13662 states and 18347 transitions. [2021-11-06 17:00:07,426 INFO L78 Accepts]: Start accepts. Automaton has 13662 states and 18347 transitions. Word has length 154 [2021-11-06 17:00:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:07,426 INFO L470 AbstractCegarLoop]: Abstraction has 13662 states and 18347 transitions. [2021-11-06 17:00:07,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 13662 states and 18347 transitions. [2021-11-06 17:00:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-06 17:00:07,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:07,429 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:07,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 17:00:07,429 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash -634290479, now seen corresponding path program 1 times [2021-11-06 17:00:07,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:07,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995944220] [2021-11-06 17:00:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:07,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 17:00:07,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:07,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995944220] [2021-11-06 17:00:07,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995944220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:07,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:07,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:00:07,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054892598] [2021-11-06 17:00:07,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:00:07,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:00:07,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:00:07,558 INFO L87 Difference]: Start difference. First operand 13662 states and 18347 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:10,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:10,336 INFO L93 Difference]: Finished difference Result 24086 states and 32300 transitions. [2021-11-06 17:00:10,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:00:10,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 154 [2021-11-06 17:00:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:10,354 INFO L225 Difference]: With dead ends: 24086 [2021-11-06 17:00:10,355 INFO L226 Difference]: Without dead ends: 10606 [2021-11-06 17:00:10,370 INFO L786 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 [2021-11-06 17:00:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10606 states. [2021-11-06 17:00:10,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10606 to 10463. [2021-11-06 17:00:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10463 states, 10453 states have (on average 1.339902420357792) internal successors, (14006), 10462 states have internal predecessors, (14006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 14006 transitions. [2021-11-06 17:00:10,892 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 14006 transitions. Word has length 154 [2021-11-06 17:00:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:10,892 INFO L470 AbstractCegarLoop]: Abstraction has 10463 states and 14006 transitions. [2021-11-06 17:00:10,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 14006 transitions. [2021-11-06 17:00:10,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-06 17:00:10,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:10,896 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:10,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 17:00:10,896 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:10,897 INFO L85 PathProgramCache]: Analyzing trace with hash 903703252, now seen corresponding path program 1 times [2021-11-06 17:00:10,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:10,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145783576] [2021-11-06 17:00:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:10,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 17:00:11,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:11,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145783576] [2021-11-06 17:00:11,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145783576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:11,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:11,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:00:11,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692107419] [2021-11-06 17:00:11,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:00:11,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:11,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:00:11,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:00:11,044 INFO L87 Difference]: Start difference. First operand 10463 states and 14006 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:11,913 INFO L93 Difference]: Finished difference Result 24131 states and 32263 transitions. [2021-11-06 17:00:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:00:11,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 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 159 [2021-11-06 17:00:11,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:11,934 INFO L225 Difference]: With dead ends: 24131 [2021-11-06 17:00:11,934 INFO L226 Difference]: Without dead ends: 13850 [2021-11-06 17:00:11,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:00:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13850 states. [2021-11-06 17:00:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13850 to 7091. [2021-11-06 17:00:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7091 states, 7081 states have (on average 1.3358282728428188) internal successors, (9459), 7090 states have internal predecessors, (9459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7091 states to 7091 states and 9459 transitions. [2021-11-06 17:00:12,371 INFO L78 Accepts]: Start accepts. Automaton has 7091 states and 9459 transitions. Word has length 159 [2021-11-06 17:00:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:12,372 INFO L470 AbstractCegarLoop]: Abstraction has 7091 states and 9459 transitions. [2021-11-06 17:00:12,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7091 states and 9459 transitions. [2021-11-06 17:00:12,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-06 17:00:12,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:12,375 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:12,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 17:00:12,376 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:12,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash -206023435, now seen corresponding path program 1 times [2021-11-06 17:00:12,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:12,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444347567] [2021-11-06 17:00:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:12,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:12,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:12,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444347567] [2021-11-06 17:00:12,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444347567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:12,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:12,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:00:12,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104430494] [2021-11-06 17:00:12,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:00:12,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:00:12,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:00:12,539 INFO L87 Difference]: Start difference. First operand 7091 states and 9459 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:13,555 INFO L93 Difference]: Finished difference Result 19781 states and 26483 transitions. [2021-11-06 17:00:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:13,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 205 [2021-11-06 17:00:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:13,576 INFO L225 Difference]: With dead ends: 19781 [2021-11-06 17:00:13,576 INFO L226 Difference]: Without dead ends: 12872 [2021-11-06 17:00:13,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:00:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12872 states. [2021-11-06 17:00:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12872 to 7109. [2021-11-06 17:00:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7109 states, 7099 states have (on average 1.334976757289759) internal successors, (9477), 7108 states have internal predecessors, (9477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 9477 transitions. [2021-11-06 17:00:14,075 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 9477 transitions. Word has length 205 [2021-11-06 17:00:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:14,075 INFO L470 AbstractCegarLoop]: Abstraction has 7109 states and 9477 transitions. [2021-11-06 17:00:14,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 9477 transitions. [2021-11-06 17:00:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-06 17:00:14,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:14,083 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:14,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 17:00:14,083 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:14,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash -303381284, now seen corresponding path program 1 times [2021-11-06 17:00:14,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:14,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226911234] [2021-11-06 17:00:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:14,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:14,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:14,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226911234] [2021-11-06 17:00:14,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226911234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:14,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:14,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:00:14,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770900680] [2021-11-06 17:00:14,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:00:14,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:00:14,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:00:14,254 INFO L87 Difference]: Start difference. First operand 7109 states and 9477 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:14,815 INFO L93 Difference]: Finished difference Result 14042 states and 18728 transitions. [2021-11-06 17:00:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:00:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 207 [2021-11-06 17:00:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:14,827 INFO L225 Difference]: With dead ends: 14042 [2021-11-06 17:00:14,827 INFO L226 Difference]: Without dead ends: 7115 [2021-11-06 17:00:14,835 INFO L786 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 [2021-11-06 17:00:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2021-11-06 17:00:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 7115. [2021-11-06 17:00:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7115 states, 7105 states have (on average 1.3346938775510204) internal successors, (9483), 7114 states have internal predecessors, (9483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7115 states to 7115 states and 9483 transitions. [2021-11-06 17:00:15,319 INFO L78 Accepts]: Start accepts. Automaton has 7115 states and 9483 transitions. Word has length 207 [2021-11-06 17:00:15,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:15,320 INFO L470 AbstractCegarLoop]: Abstraction has 7115 states and 9483 transitions. [2021-11-06 17:00:15,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:15,320 INFO L276 IsEmpty]: Start isEmpty. Operand 7115 states and 9483 transitions. [2021-11-06 17:00:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-06 17:00:15,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:15,323 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:15,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 17:00:15,323 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash -318900002, now seen corresponding path program 1 times [2021-11-06 17:00:15,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:15,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623092895] [2021-11-06 17:00:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:15,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:15,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:15,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623092895] [2021-11-06 17:00:15,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623092895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:15,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:15,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 17:00:15,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587108658] [2021-11-06 17:00:15,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 17:00:15,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:15,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 17:00:15,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:00:15,720 INFO L87 Difference]: Start difference. First operand 7115 states and 9483 transitions. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:17,993 INFO L93 Difference]: Finished difference Result 27815 states and 37317 transitions. [2021-11-06 17:00:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 17:00:17,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 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 207 [2021-11-06 17:00:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:18,024 INFO L225 Difference]: With dead ends: 27815 [2021-11-06 17:00:18,024 INFO L226 Difference]: Without dead ends: 20882 [2021-11-06 17:00:18,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-06 17:00:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20882 states. [2021-11-06 17:00:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20882 to 7145. [2021-11-06 17:00:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7135 states have (on average 1.3332866152768046) internal successors, (9513), 7144 states have internal predecessors, (9513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:18,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 9513 transitions. [2021-11-06 17:00:18,609 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 9513 transitions. Word has length 207 [2021-11-06 17:00:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:18,610 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 9513 transitions. [2021-11-06 17:00:18,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 9513 transitions. [2021-11-06 17:00:18,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-06 17:00:18,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:18,613 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:18,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 17:00:18,614 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash 31817434, now seen corresponding path program 1 times [2021-11-06 17:00:18,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:18,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358242743] [2021-11-06 17:00:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:18,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:18,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:18,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358242743] [2021-11-06 17:00:18,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358242743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:18,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:18,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:00:18,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83028870] [2021-11-06 17:00:18,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:00:18,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:00:18,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:00:18,924 INFO L87 Difference]: Start difference. First operand 7145 states and 9513 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:20,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:20,572 INFO L93 Difference]: Finished difference Result 24205 states and 32369 transitions. [2021-11-06 17:00:20,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:00:20,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 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 209 [2021-11-06 17:00:20,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:20,600 INFO L225 Difference]: With dead ends: 24205 [2021-11-06 17:00:20,600 INFO L226 Difference]: Without dead ends: 17242 [2021-11-06 17:00:20,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 17:00:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17242 states. [2021-11-06 17:00:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17242 to 7169. [2021-11-06 17:00:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7169 states, 7159 states have (on average 1.3321692973879034) internal successors, (9537), 7168 states have internal predecessors, (9537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 9537 transitions. [2021-11-06 17:00:21,194 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 9537 transitions. Word has length 209 [2021-11-06 17:00:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:21,194 INFO L470 AbstractCegarLoop]: Abstraction has 7169 states and 9537 transitions. [2021-11-06 17:00:21,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 9537 transitions. [2021-11-06 17:00:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 17:00:21,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:21,198 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:21,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 17:00:21,198 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:21,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1352257662, now seen corresponding path program 1 times [2021-11-06 17:00:21,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:21,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573370264] [2021-11-06 17:00:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:21,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:21,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:21,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573370264] [2021-11-06 17:00:21,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573370264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:21,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:21,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:00:21,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46351295] [2021-11-06 17:00:21,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:00:21,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:21,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:00:21,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:00:21,456 INFO L87 Difference]: Start difference. First operand 7169 states and 9537 transitions. Second operand has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:22,976 INFO L93 Difference]: Finished difference Result 22392 states and 29892 transitions. [2021-11-06 17:00:22,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:22,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 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 211 [2021-11-06 17:00:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:23,001 INFO L225 Difference]: With dead ends: 22392 [2021-11-06 17:00:23,002 INFO L226 Difference]: Without dead ends: 15405 [2021-11-06 17:00:23,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:00:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15405 states. [2021-11-06 17:00:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15405 to 7193. [2021-11-06 17:00:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7193 states, 7183 states have (on average 1.3310594459139635) internal successors, (9561), 7192 states have internal predecessors, (9561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7193 states to 7193 states and 9561 transitions. [2021-11-06 17:00:23,665 INFO L78 Accepts]: Start accepts. Automaton has 7193 states and 9561 transitions. Word has length 211 [2021-11-06 17:00:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:23,665 INFO L470 AbstractCegarLoop]: Abstraction has 7193 states and 9561 transitions. [2021-11-06 17:00:23,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:23,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7193 states and 9561 transitions. [2021-11-06 17:00:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-06 17:00:23,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:23,668 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:23,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 17:00:23,669 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1179730182, now seen corresponding path program 1 times [2021-11-06 17:00:23,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:23,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384030184] [2021-11-06 17:00:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:23,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:23,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:23,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384030184] [2021-11-06 17:00:23,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384030184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:23,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:23,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:00:23,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345212229] [2021-11-06 17:00:23,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:00:23,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:23,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:00:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:00:23,910 INFO L87 Difference]: Start difference. First operand 7193 states and 9561 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:26,303 INFO L93 Difference]: Finished difference Result 34127 states and 45485 transitions. [2021-11-06 17:00:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 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 213 [2021-11-06 17:00:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:26,345 INFO L225 Difference]: With dead ends: 34127 [2021-11-06 17:00:26,345 INFO L226 Difference]: Without dead ends: 27116 [2021-11-06 17:00:26,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:00:26,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27116 states. [2021-11-06 17:00:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27116 to 7211. [2021-11-06 17:00:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7211 states, 7201 states have (on average 1.330231912234412) internal successors, (9579), 7210 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7211 states to 7211 states and 9579 transitions. [2021-11-06 17:00:27,120 INFO L78 Accepts]: Start accepts. Automaton has 7211 states and 9579 transitions. Word has length 213 [2021-11-06 17:00:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:27,120 INFO L470 AbstractCegarLoop]: Abstraction has 7211 states and 9579 transitions. [2021-11-06 17:00:27,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7211 states and 9579 transitions. [2021-11-06 17:00:27,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-06 17:00:27,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:27,124 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:27,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 17:00:27,127 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash 992428446, now seen corresponding path program 1 times [2021-11-06 17:00:27,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:27,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238177947] [2021-11-06 17:00:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:27,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:27,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:27,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238177947] [2021-11-06 17:00:27,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238177947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:27,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:27,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:00:27,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727115134] [2021-11-06 17:00:27,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:00:27,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:00:27,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:00:27,382 INFO L87 Difference]: Start difference. First operand 7211 states and 9579 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:30,166 INFO L93 Difference]: Finished difference Result 34145 states and 45497 transitions. [2021-11-06 17:00:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:30,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 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 215 [2021-11-06 17:00:30,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:30,207 INFO L225 Difference]: With dead ends: 34145 [2021-11-06 17:00:30,207 INFO L226 Difference]: Without dead ends: 27116 [2021-11-06 17:00:30,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:00:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27116 states. [2021-11-06 17:00:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27116 to 7229. [2021-11-06 17:00:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7229 states, 7219 states have (on average 1.3294085053331486) internal successors, (9597), 7228 states have internal predecessors, (9597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7229 states to 7229 states and 9597 transitions. [2021-11-06 17:00:30,961 INFO L78 Accepts]: Start accepts. Automaton has 7229 states and 9597 transitions. Word has length 215 [2021-11-06 17:00:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:30,961 INFO L470 AbstractCegarLoop]: Abstraction has 7229 states and 9597 transitions. [2021-11-06 17:00:30,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7229 states and 9597 transitions. [2021-11-06 17:00:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 17:00:30,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:30,965 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:30,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 17:00:30,966 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash 824808098, now seen corresponding path program 1 times [2021-11-06 17:00:30,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:30,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531650870] [2021-11-06 17:00:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:30,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:31,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:31,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531650870] [2021-11-06 17:00:31,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531650870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:31,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:31,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:00:31,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020497681] [2021-11-06 17:00:31,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:00:31,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:31,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:00:31,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:00:31,212 INFO L87 Difference]: Start difference. First operand 7229 states and 9597 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:33,279 INFO L93 Difference]: Finished difference Result 24933 states and 33197 transitions. [2021-11-06 17:00:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:33,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 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 217 [2021-11-06 17:00:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:33,313 INFO L225 Difference]: With dead ends: 24933 [2021-11-06 17:00:33,313 INFO L226 Difference]: Without dead ends: 17886 [2021-11-06 17:00:33,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:00:33,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17886 states. [2021-11-06 17:00:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17886 to 7247. [2021-11-06 17:00:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 7237 states have (on average 1.3285891944175763) internal successors, (9615), 7246 states have internal predecessors, (9615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 9615 transitions. [2021-11-06 17:00:34,130 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 9615 transitions. Word has length 217 [2021-11-06 17:00:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:34,130 INFO L470 AbstractCegarLoop]: Abstraction has 7247 states and 9615 transitions. [2021-11-06 17:00:34,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 9615 transitions. [2021-11-06 17:00:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-06 17:00:34,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:34,134 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:34,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 17:00:34,134 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash 408308230, now seen corresponding path program 1 times [2021-11-06 17:00:34,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:34,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538610006] [2021-11-06 17:00:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:34,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:34,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:34,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538610006] [2021-11-06 17:00:34,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538610006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:34,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:34,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:00:34,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142304341] [2021-11-06 17:00:34,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:00:34,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:00:34,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:00:34,387 INFO L87 Difference]: Start difference. First operand 7247 states and 9615 transitions. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:36,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:36,249 INFO L93 Difference]: Finished difference Result 22470 states and 29946 transitions. [2021-11-06 17:00:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:36,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 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 219 [2021-11-06 17:00:36,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:36,271 INFO L225 Difference]: With dead ends: 22470 [2021-11-06 17:00:36,271 INFO L226 Difference]: Without dead ends: 15405 [2021-11-06 17:00:36,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:00:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15405 states. [2021-11-06 17:00:37,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15405 to 7271. [2021-11-06 17:00:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7271 states, 7261 states have (on average 1.3275030987467291) internal successors, (9639), 7270 states have internal predecessors, (9639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 9639 transitions. [2021-11-06 17:00:37,051 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 9639 transitions. Word has length 219 [2021-11-06 17:00:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:37,051 INFO L470 AbstractCegarLoop]: Abstraction has 7271 states and 9639 transitions. [2021-11-06 17:00:37,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 9639 transitions. [2021-11-06 17:00:37,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-06 17:00:37,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:37,055 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:37,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 17:00:37,056 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:37,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:37,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1067450422, now seen corresponding path program 1 times [2021-11-06 17:00:37,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:37,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734345360] [2021-11-06 17:00:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:37,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:37,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:37,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734345360] [2021-11-06 17:00:37,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734345360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:37,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:37,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:00:37,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140945978] [2021-11-06 17:00:37,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:00:37,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:00:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:00:37,324 INFO L87 Difference]: Start difference. First operand 7271 states and 9639 transitions. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:39,236 INFO L93 Difference]: Finished difference Result 22494 states and 29964 transitions. [2021-11-06 17:00:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:39,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 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 221 [2021-11-06 17:00:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:39,258 INFO L225 Difference]: With dead ends: 22494 [2021-11-06 17:00:39,258 INFO L226 Difference]: Without dead ends: 15405 [2021-11-06 17:00:39,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:00:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15405 states. [2021-11-06 17:00:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15405 to 7295. [2021-11-06 17:00:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7295 states, 7285 states have (on average 1.326424159231297) internal successors, (9663), 7294 states have internal predecessors, (9663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:40,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7295 states to 7295 states and 9663 transitions. [2021-11-06 17:00:40,087 INFO L78 Accepts]: Start accepts. Automaton has 7295 states and 9663 transitions. Word has length 221 [2021-11-06 17:00:40,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:40,087 INFO L470 AbstractCegarLoop]: Abstraction has 7295 states and 9663 transitions. [2021-11-06 17:00:40,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:40,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7295 states and 9663 transitions. [2021-11-06 17:00:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-06 17:00:40,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:40,091 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:40,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 17:00:40,091 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:40,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:40,091 INFO L85 PathProgramCache]: Analyzing trace with hash -41960346, now seen corresponding path program 1 times [2021-11-06 17:00:40,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:40,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254764326] [2021-11-06 17:00:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:40,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:00:40,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:40,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254764326] [2021-11-06 17:00:40,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254764326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:40,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:40,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:00:40,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63864219] [2021-11-06 17:00:40,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:00:40,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:00:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:00:40,322 INFO L87 Difference]: Start difference. First operand 7295 states and 9663 transitions. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:42,292 INFO L93 Difference]: Finished difference Result 22254 states and 29676 transitions. [2021-11-06 17:00:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:00:42,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 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 223 [2021-11-06 17:00:42,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:42,316 INFO L225 Difference]: With dead ends: 22254 [2021-11-06 17:00:42,317 INFO L226 Difference]: Without dead ends: 15141 [2021-11-06 17:00:42,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:00:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15141 states. [2021-11-06 17:00:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15141 to 7319. [2021-11-06 17:00:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 7309 states have (on average 1.3253523053769325) internal successors, (9687), 7318 states have internal predecessors, (9687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 9687 transitions. [2021-11-06 17:00:43,229 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 9687 transitions. Word has length 223 [2021-11-06 17:00:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:43,229 INFO L470 AbstractCegarLoop]: Abstraction has 7319 states and 9687 transitions. [2021-11-06 17:00:43,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 9687 transitions. [2021-11-06 17:00:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-06 17:00:43,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:43,233 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:43,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 17:00:43,233 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash 580571946, now seen corresponding path program 1 times [2021-11-06 17:00:43,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:43,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84487655] [2021-11-06 17:00:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:43,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 17:00:44,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:44,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84487655] [2021-11-06 17:00:44,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84487655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:00:44,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:00:44,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:00:44,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775134166] [2021-11-06 17:00:44,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:00:44,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:00:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:00:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:00:44,415 INFO L87 Difference]: Start difference. First operand 7319 states and 9687 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:00:45,343 INFO L93 Difference]: Finished difference Result 14611 states and 19351 transitions. [2021-11-06 17:00:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:00:45,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 225 [2021-11-06 17:00:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:00:45,353 INFO L225 Difference]: With dead ends: 14611 [2021-11-06 17:00:45,353 INFO L226 Difference]: Without dead ends: 7324 [2021-11-06 17:00:45,360 INFO L786 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 [2021-11-06 17:00:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7324 states. [2021-11-06 17:00:46,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7324 to 7324. [2021-11-06 17:00:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7324 states, 7314 states have (on average 1.3251298878862456) internal successors, (9692), 7323 states have internal predecessors, (9692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7324 states to 7324 states and 9692 transitions. [2021-11-06 17:00:46,167 INFO L78 Accepts]: Start accepts. Automaton has 7324 states and 9692 transitions. Word has length 225 [2021-11-06 17:00:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:00:46,167 INFO L470 AbstractCegarLoop]: Abstraction has 7324 states and 9692 transitions. [2021-11-06 17:00:46,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:00:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 7324 states and 9692 transitions. [2021-11-06 17:00:46,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-06 17:00:46,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:00:46,170 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:00:46,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 17:00:46,171 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:00:46,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:00:46,171 INFO L85 PathProgramCache]: Analyzing trace with hash 453510249, now seen corresponding path program 1 times [2021-11-06 17:00:46,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:00:46,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765551417] [2021-11-06 17:00:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:46,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:00:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:00:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 17:00:47,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:00:47,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765551417] [2021-11-06 17:00:47,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765551417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:00:47,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667138884] [2021-11-06 17:00:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:00:47,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:00:47,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:00:47,224 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) [2021-11-06 17:00:47,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 17:02:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:40,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 3962 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 17:02:40,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:02:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 17:02:40,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667138884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:02:40,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:02:40,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 17:02:40,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783458233] [2021-11-06 17:02:40,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:02:40,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:02:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:02:40,955 INFO L87 Difference]: Start difference. First operand 7324 states and 9692 transitions. Second operand has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:41,879 INFO L93 Difference]: Finished difference Result 14620 states and 19360 transitions. [2021-11-06 17:02:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 17:02:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 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 230 [2021-11-06 17:02:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:41,889 INFO L225 Difference]: With dead ends: 14620 [2021-11-06 17:02:41,890 INFO L226 Difference]: Without dead ends: 7329 [2021-11-06 17:02:41,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:02:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7329 states. [2021-11-06 17:02:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7329 to 7329. [2021-11-06 17:02:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 7319 states have (on average 1.3249077742861046) internal successors, (9697), 7328 states have internal predecessors, (9697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 9697 transitions. [2021-11-06 17:02:42,703 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 9697 transitions. Word has length 230 [2021-11-06 17:02:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:42,703 INFO L470 AbstractCegarLoop]: Abstraction has 7329 states and 9697 transitions. [2021-11-06 17:02:42,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 9697 transitions. [2021-11-06 17:02:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-06 17:02:42,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:42,707 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:42,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 17:02:42,907 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,SelfDestructingSolverStorable36 [2021-11-06 17:02:42,908 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:02:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1145507722, now seen corresponding path program 2 times [2021-11-06 17:02:42,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:42,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805537903] [2021-11-06 17:02:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:42,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-06 17:02:44,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:44,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805537903] [2021-11-06 17:02:44,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805537903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:02:44,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271772661] [2021-11-06 17:02:44,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 17:02:44,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:02:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:02:44,650 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) [2021-11-06 17:02:44,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 17:03:03,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 17:03:03,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 17:03:03,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 17:03:03,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:03:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 17:03:03,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271772661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:03:03,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:03:03,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-06 17:03:03,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247576134] [2021-11-06 17:03:03,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:03:03,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:03:03,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:03:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:03:03,920 INFO L87 Difference]: Start difference. First operand 7329 states and 9697 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:03:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:03:04,801 INFO L93 Difference]: Finished difference Result 14610 states and 19345 transitions. [2021-11-06 17:03:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:03:04,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 235 [2021-11-06 17:03:04,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:03:04,810 INFO L225 Difference]: With dead ends: 14610 [2021-11-06 17:03:04,811 INFO L226 Difference]: Without dead ends: 7333 [2021-11-06 17:03:04,817 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:03:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7333 states. [2021-11-06 17:03:05,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7333 to 7333. [2021-11-06 17:03:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7333 states, 7323 states have (on average 1.3247303017888843) internal successors, (9701), 7332 states have internal predecessors, (9701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:03:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 9701 transitions. [2021-11-06 17:03:05,611 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 9701 transitions. Word has length 235 [2021-11-06 17:03:05,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:03:05,611 INFO L470 AbstractCegarLoop]: Abstraction has 7333 states and 9701 transitions. [2021-11-06 17:03:05,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:03:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 9701 transitions. [2021-11-06 17:03:05,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-06 17:03:05,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:03:05,615 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:03:05,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 17:03:05,815 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,SelfDestructingSolverStorable37 [2021-11-06 17:03:05,816 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:03:05,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:03:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1346607434, now seen corresponding path program 1 times [2021-11-06 17:03:05,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:03:05,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649870055] [2021-11-06 17:03:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:03:05,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:03:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:03:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-06 17:03:07,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:03:07,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649870055] [2021-11-06 17:03:07,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649870055] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:03:07,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585641367] [2021-11-06 17:03:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:03:07,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:03:07,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:03:07,347 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) [2021-11-06 17:03:07,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 17:06:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:56,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 4016 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-06 17:06:56,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:06:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-06 17:06:56,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585641367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:06:56,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:06:56,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 17:06:56,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056871259] [2021-11-06 17:06:56,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:06:56,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:06:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:06:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:06:56,843 INFO L87 Difference]: Start difference. First operand 7333 states and 9701 transitions. Second operand has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:06:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:06:57,781 INFO L93 Difference]: Finished difference Result 14637 states and 19377 transitions. [2021-11-06 17:06:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:06:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 0 states have call successors, (0), 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 239 [2021-11-06 17:06:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:06:57,791 INFO L225 Difference]: With dead ends: 14637 [2021-11-06 17:06:57,791 INFO L226 Difference]: Without dead ends: 7338 [2021-11-06 17:06:57,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:06:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2021-11-06 17:06:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 7338. [2021-11-06 17:06:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7338 states, 7328 states have (on average 1.324508733624454) internal successors, (9706), 7337 states have internal predecessors, (9706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:06:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 9706 transitions. [2021-11-06 17:06:58,643 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 9706 transitions. Word has length 239 [2021-11-06 17:06:58,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:06:58,643 INFO L470 AbstractCegarLoop]: Abstraction has 7338 states and 9706 transitions. [2021-11-06 17:06:58,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:06:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 9706 transitions. [2021-11-06 17:06:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-06 17:06:58,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:06:58,647 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:06:58,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 17:06:58,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:06:58,876 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-06 17:06:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:06:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash 534298765, now seen corresponding path program 2 times [2021-11-06 17:06:58,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:06:58,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171928279] [2021-11-06 17:06:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:06:58,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:07:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:07:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-06 17:07:00,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:07:00,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171928279] [2021-11-06 17:07:00,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171928279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:07:00,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798454733] [2021-11-06 17:07:00,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 17:07:00,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:07:00,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:07:00,572 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) [2021-11-06 17:07:00,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Killed by 15