./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.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 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 17:33:54,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 17:33:54,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 17:33:54,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 17:33:54,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 17:33:54,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 17:33:54,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 17:33:54,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 17:33:54,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 17:33:54,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 17:33:54,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 17:33:54,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 17:33:54,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 17:33:54,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 17:33:54,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 17:33:54,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 17:33:54,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 17:33:54,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 17:33:54,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 17:33:54,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 17:33:54,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 17:33:54,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 17:33:54,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 17:33:54,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 17:33:54,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 17:33:54,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 17:33:54,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 17:33:54,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 17:33:54,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 17:33:54,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 17:33:54,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 17:33:54,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 17:33:54,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 17:33:54,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 17:33:54,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 17:33:54,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 17:33:54,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 17:33:54,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 17:33:54,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 17:33:54,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 17:33:54,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 17:33:54,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 17:33:54,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 17:33:54,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 17:33:54,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 17:33:54,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 17:33:54,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 17:33:54,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 17:33:54,567 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 17:33:54,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 17:33:54,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 17:33:54,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 17:33:54,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 17:33:54,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 17:33:54,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 17:33:54,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 17:33:54,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 17:33:54,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 17:33:54,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 17:33:54,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 17:33:54,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 17:33:54,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:33:54,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 17:33:54,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 17:33:54,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 17:33:54,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 17:33:54,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 17:33:54,573 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 17:33:54,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 17:33:54,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 17:33:54,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 17:33:54,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b [2021-11-05 17:33:54,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 17:33:54,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 17:33:54,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 17:33:54,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 17:33:54,847 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 17:33:54,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:33:54,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1e6fcde/d1d826cb8b504517a0d624211dd3fc8d/FLAG0d69a7960 [2021-11-05 17:33:55,406 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 17:33:55,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:33:55,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1e6fcde/d1d826cb8b504517a0d624211dd3fc8d/FLAG0d69a7960 [2021-11-05 17:33:55,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e1e6fcde/d1d826cb8b504517a0d624211dd3fc8d [2021-11-05 17:33:55,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 17:33:55,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 17:33:55,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 17:33:55,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 17:33:55,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 17:33:55,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:33:55" (1/1) ... [2021-11-05 17:33:55,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35084d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:55, skipping insertion in model container [2021-11-05 17:33:55,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:33:55" (1/1) ... [2021-11-05 17:33:55,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 17:33:55,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 17:33:56,257 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-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-05 17:33:56,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:33:56,296 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 17:33:56,422 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-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-05 17:33:56,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:33:56,468 INFO L208 MainTranslator]: Completed translation [2021-11-05 17:33:56,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56 WrapperNode [2021-11-05 17:33:56,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 17:33:56,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 17:33:56,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 17:33:56,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 17:33:56,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 17:33:56,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 17:33:56,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 17:33:56,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 17:33:56,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 17:33:56,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 17:33:56,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 17:33:56,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 17:33:56,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (1/1) ... [2021-11-05 17:33:56,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:33:56,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:33:56,707 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) [2021-11-05 17:33:56,710 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 [2021-11-05 17:33:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 17:33:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 17:33:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 17:33:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 17:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 17:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 17:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 17:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 17:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 17:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 17:33:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 17:33:57,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 17:33:57,672 INFO L299 CfgBuilder]: Removed 188 assume(true) statements. [2021-11-05 17:33:57,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:33:57 BoogieIcfgContainer [2021-11-05 17:33:57,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 17:33:57,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 17:33:57,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 17:33:57,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 17:33:57,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 05:33:55" (1/3) ... [2021-11-05 17:33:57,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768f7c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:33:57, skipping insertion in model container [2021-11-05 17:33:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:33:56" (2/3) ... [2021-11-05 17:33:57,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768f7c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:33:57, skipping insertion in model container [2021-11-05 17:33:57,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:33:57" (3/3) ... [2021-11-05 17:33:57,683 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-05 17:33:57,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 17:33:57,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-05 17:33:57,712 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 17:33:57,717 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 [2021-11-05 17:33:57,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-05 17:33:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 168 states have (on average 1.3988095238095237) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-05 17:33:57,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:57,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:33:57,736 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:57,741 INFO L85 PathProgramCache]: Analyzing trace with hash -21777128, now seen corresponding path program 1 times [2021-11-05 17:33:57,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:57,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941573625] [2021-11-05 17:33:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:57,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:57,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:57,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941573625] [2021-11-05 17:33:57,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941573625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:57,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:57,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:33:57,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694873841] [2021-11-05 17:33:57,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:57,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 17:33:57,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 17:33:58,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:33:58,007 INFO L87 Difference]: Start difference. First operand has 174 states, 168 states have (on average 1.3988095238095237) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:58,030 INFO L93 Difference]: Finished difference Result 344 states and 465 transitions. [2021-11-05 17:33:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 17:33:58,033 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-05 17:33:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:58,040 INFO L225 Difference]: With dead ends: 344 [2021-11-05 17:33:58,040 INFO L226 Difference]: Without dead ends: 166 [2021-11-05 17:33:58,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:33:58,044 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:58,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 17:33:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-05 17:33:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-05 17:33:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.31055900621118) internal successors, (211), 165 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) [2021-11-05 17:33:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2021-11-05 17:33:58,083 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 17 [2021-11-05 17:33:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:58,083 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2021-11-05 17:33:58,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2021-11-05 17:33:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-05 17:33:58,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:58,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:33:58,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 17:33:58,086 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:58,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1032894378, now seen corresponding path program 1 times [2021-11-05 17:33:58,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:58,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783847036] [2021-11-05 17:33:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:58,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:58,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:58,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783847036] [2021-11-05 17:33:58,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783847036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:58,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:58,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:33:58,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991068399] [2021-11-05 17:33:58,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:58,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:33:58,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:33:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,201 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:58,270 INFO L93 Difference]: Finished difference Result 455 states and 589 transitions. [2021-11-05 17:33:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:33:58,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-05 17:33:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:58,275 INFO L225 Difference]: With dead ends: 455 [2021-11-05 17:33:58,276 INFO L226 Difference]: Without dead ends: 296 [2021-11-05 17:33:58,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,279 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 178 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.66ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.97ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:58,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 397 Invalid, 16 Unknown, 0 Unchecked, 5.66ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 29.97ms Time] [2021-11-05 17:33:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-05 17:33:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-11-05 17:33:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 1.3127147766323024) internal successors, (382), 295 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 382 transitions. [2021-11-05 17:33:58,303 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 382 transitions. Word has length 17 [2021-11-05 17:33:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:58,303 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 382 transitions. [2021-11-05 17:33:58,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 382 transitions. [2021-11-05 17:33:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 17:33:58,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:58,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:33:58,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 17:33:58,307 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1262223031, now seen corresponding path program 1 times [2021-11-05 17:33:58,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:58,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382380042] [2021-11-05 17:33:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:58,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:58,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:58,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382380042] [2021-11-05 17:33:58,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382380042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:58,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:58,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 17:33:58,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613923924] [2021-11-05 17:33:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:58,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:33:58,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:58,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:33:58,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:33:58,419 INFO L87 Difference]: Start difference. First operand 296 states and 382 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:58,478 INFO L93 Difference]: Finished difference Result 750 states and 965 transitions. [2021-11-05 17:33:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:33:58,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-05 17:33:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:58,481 INFO L225 Difference]: With dead ends: 750 [2021-11-05 17:33:58,481 INFO L226 Difference]: Without dead ends: 461 [2021-11-05 17:33:58,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.95ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:33:58,487 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 606 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.85ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.27ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:58,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 844 Invalid, 24 Unknown, 0 Unchecked, 4.85ms Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 30.27ms Time] [2021-11-05 17:33:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-05 17:33:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 299. [2021-11-05 17:33:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.3061224489795917) internal successors, (384), 298 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 384 transitions. [2021-11-05 17:33:58,535 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 384 transitions. Word has length 29 [2021-11-05 17:33:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:58,535 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 384 transitions. [2021-11-05 17:33:58,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 384 transitions. [2021-11-05 17:33:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 17:33:58,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:58,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:33:58,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 17:33:58,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:58,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 512843913, now seen corresponding path program 1 times [2021-11-05 17:33:58,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:58,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213832624] [2021-11-05 17:33:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:58,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:58,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:58,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213832624] [2021-11-05 17:33:58,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213832624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:58,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:58,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:33:58,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996238645] [2021-11-05 17:33:58,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:58,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:33:58,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:33:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,610 INFO L87 Difference]: Start difference. First operand 299 states and 384 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:58,647 INFO L93 Difference]: Finished difference Result 881 states and 1137 transitions. [2021-11-05 17:33:58,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:33:58,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-05 17:33:58,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:58,649 INFO L225 Difference]: With dead ends: 881 [2021-11-05 17:33:58,650 INFO L226 Difference]: Without dead ends: 589 [2021-11-05 17:33:58,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,655 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 180 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.42ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:58,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 402 Invalid, 14 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 19.42ms Time] [2021-11-05 17:33:58,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-11-05 17:33:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 577. [2021-11-05 17:33:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 572 states have (on average 1.3041958041958042) internal successors, (746), 576 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 746 transitions. [2021-11-05 17:33:58,676 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 746 transitions. Word has length 29 [2021-11-05 17:33:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:58,676 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 746 transitions. [2021-11-05 17:33:58,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 746 transitions. [2021-11-05 17:33:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 17:33:58,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:58,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:33:58,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 17:33:58,679 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1281701350, now seen corresponding path program 1 times [2021-11-05 17:33:58,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:58,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972561038] [2021-11-05 17:33:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:58,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:58,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:58,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972561038] [2021-11-05 17:33:58,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972561038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:58,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:58,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:33:58,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673270934] [2021-11-05 17:33:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:58,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:33:58,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:33:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,753 INFO L87 Difference]: Start difference. First operand 577 states and 746 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:58,770 INFO L93 Difference]: Finished difference Result 577 states and 746 transitions. [2021-11-05 17:33:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:33:58,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-05 17:33:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:58,773 INFO L225 Difference]: With dead ends: 577 [2021-11-05 17:33:58,773 INFO L226 Difference]: Without dead ends: 575 [2021-11-05 17:33:58,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,774 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 181 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.71ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:58,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.71ms Time] [2021-11-05 17:33:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-05 17:33:58,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2021-11-05 17:33:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 571 states have (on average 1.3029772329246936) internal successors, (744), 574 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 744 transitions. [2021-11-05 17:33:58,793 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 744 transitions. Word has length 30 [2021-11-05 17:33:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:58,793 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 744 transitions. [2021-11-05 17:33:58,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 744 transitions. [2021-11-05 17:33:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-05 17:33:58,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:58,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:33:58,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 17:33:58,795 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:58,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1078029645, now seen corresponding path program 1 times [2021-11-05 17:33:58,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:58,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464615382] [2021-11-05 17:33:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:58,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:58,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:58,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464615382] [2021-11-05 17:33:58,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464615382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:58,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:58,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:33:58,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343614588] [2021-11-05 17:33:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:58,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:33:58,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:33:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,836 INFO L87 Difference]: Start difference. First operand 575 states and 744 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:58,850 INFO L93 Difference]: Finished difference Result 575 states and 744 transitions. [2021-11-05 17:33:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:33:58,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-05 17:33:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:58,852 INFO L225 Difference]: With dead ends: 575 [2021-11-05 17:33:58,852 INFO L226 Difference]: Without dead ends: 573 [2021-11-05 17:33:58,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,853 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.55ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:58,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 206 Invalid, 1 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.55ms Time] [2021-11-05 17:33:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-05 17:33:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2021-11-05 17:33:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 570 states have (on average 1.3017543859649123) internal successors, (742), 572 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 742 transitions. [2021-11-05 17:33:58,871 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 742 transitions. Word has length 31 [2021-11-05 17:33:58,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:58,871 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 742 transitions. [2021-11-05 17:33:58,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,871 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 742 transitions. [2021-11-05 17:33:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-05 17:33:58,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:58,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:33:58,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 17:33:58,872 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:58,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash 940825924, now seen corresponding path program 1 times [2021-11-05 17:33:58,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:58,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808216797] [2021-11-05 17:33:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:58,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:58,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:58,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808216797] [2021-11-05 17:33:58,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808216797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:58,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:58,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:33:58,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550929934] [2021-11-05 17:33:58,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:58,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:33:58,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:58,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:33:58,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,920 INFO L87 Difference]: Start difference. First operand 573 states and 742 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:58,936 INFO L93 Difference]: Finished difference Result 573 states and 742 transitions. [2021-11-05 17:33:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:33:58,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-05 17:33:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:58,938 INFO L225 Difference]: With dead ends: 573 [2021-11-05 17:33:58,938 INFO L226 Difference]: Without dead ends: 571 [2021-11-05 17:33:58,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,939 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.55ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:58,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.55ms Time] [2021-11-05 17:33:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-05 17:33:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-11-05 17:33:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 569 states have (on average 1.3005272407732864) internal successors, (740), 570 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 740 transitions. [2021-11-05 17:33:58,958 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 740 transitions. Word has length 32 [2021-11-05 17:33:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:58,958 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 740 transitions. [2021-11-05 17:33:58,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 740 transitions. [2021-11-05 17:33:58,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 17:33:58,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:58,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:33:58,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 17:33:58,960 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash -899160867, now seen corresponding path program 1 times [2021-11-05 17:33:58,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:58,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951038170] [2021-11-05 17:33:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:58,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:58,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:58,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951038170] [2021-11-05 17:33:58,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951038170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:58,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:58,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:33:58,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541740805] [2021-11-05 17:33:58,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:58,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:33:58,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:33:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:58,997 INFO L87 Difference]: Start difference. First operand 571 states and 740 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:59,013 INFO L93 Difference]: Finished difference Result 571 states and 740 transitions. [2021-11-05 17:33:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:33:59,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-05 17:33:59,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:59,015 INFO L225 Difference]: With dead ends: 571 [2021-11-05 17:33:59,015 INFO L226 Difference]: Without dead ends: 562 [2021-11-05 17:33:59,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:59,016 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 172 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:59,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 17:33:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-05 17:33:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-11-05 17:33:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 1.2994652406417113) internal successors, (729), 561 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 729 transitions. [2021-11-05 17:33:59,035 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 729 transitions. Word has length 33 [2021-11-05 17:33:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:59,036 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 729 transitions. [2021-11-05 17:33:59,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 729 transitions. [2021-11-05 17:33:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 17:33:59,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:59,038 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:33:59,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 17:33:59,038 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:59,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1288304928, now seen corresponding path program 1 times [2021-11-05 17:33:59,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:59,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341263208] [2021-11-05 17:33:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:59,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:33:59,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:59,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341263208] [2021-11-05 17:33:59,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341263208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:59,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:59,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:33:59,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416723165] [2021-11-05 17:33:59,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:59,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:33:59,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:59,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:33:59,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:59,091 INFO L87 Difference]: Start difference. First operand 562 states and 729 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:59,124 INFO L93 Difference]: Finished difference Result 1175 states and 1533 transitions. [2021-11-05 17:33:59,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:33:59,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-05 17:33:59,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:59,126 INFO L225 Difference]: With dead ends: 1175 [2021-11-05 17:33:59,126 INFO L226 Difference]: Without dead ends: 620 [2021-11-05 17:33:59,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:33:59,127 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 26 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.53ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:59,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 383 Invalid, 12 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 14.53ms Time] [2021-11-05 17:33:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-05 17:33:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 612. [2021-11-05 17:33:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.309328968903437) internal successors, (800), 611 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 800 transitions. [2021-11-05 17:33:59,147 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 800 transitions. Word has length 86 [2021-11-05 17:33:59,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:59,147 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 800 transitions. [2021-11-05 17:33:59,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,147 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 800 transitions. [2021-11-05 17:33:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 17:33:59,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:59,149 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:33:59,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 17:33:59,149 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1355240599, now seen corresponding path program 1 times [2021-11-05 17:33:59,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:59,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543904909] [2021-11-05 17:33:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:59,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:33:59,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:59,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543904909] [2021-11-05 17:33:59,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543904909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:59,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:59,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 17:33:59,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402606915] [2021-11-05 17:33:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:59,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:33:59,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:33:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:33:59,202 INFO L87 Difference]: Start difference. First operand 612 states and 800 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:59,255 INFO L93 Difference]: Finished difference Result 1880 states and 2484 transitions. [2021-11-05 17:33:59,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 17:33:59,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-05 17:33:59,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:59,259 INFO L225 Difference]: With dead ends: 1880 [2021-11-05 17:33:59,259 INFO L226 Difference]: Without dead ends: 1275 [2021-11-05 17:33:59,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.12ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:33:59,260 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 402 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.00ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:59,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 1053 Invalid, 18 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 11.00ms Time] [2021-11-05 17:33:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-11-05 17:33:59,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 624. [2021-11-05 17:33:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.303370786516854) internal successors, (812), 623 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 812 transitions. [2021-11-05 17:33:59,290 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 812 transitions. Word has length 94 [2021-11-05 17:33:59,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:59,290 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 812 transitions. [2021-11-05 17:33:59,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,291 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 812 transitions. [2021-11-05 17:33:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 17:33:59,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:59,292 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:33:59,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 17:33:59,292 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1473601232, now seen corresponding path program 1 times [2021-11-05 17:33:59,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:59,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086776758] [2021-11-05 17:33:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:59,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:33:59,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:59,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086776758] [2021-11-05 17:33:59,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086776758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:59,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:59,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:33:59,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843333857] [2021-11-05 17:33:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:59,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:33:59,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:33:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:33:59,376 INFO L87 Difference]: Start difference. First operand 624 states and 812 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:59,441 INFO L93 Difference]: Finished difference Result 1694 states and 2206 transitions. [2021-11-05 17:33:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 17:33:59,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-05 17:33:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:59,445 INFO L225 Difference]: With dead ends: 1694 [2021-11-05 17:33:59,445 INFO L226 Difference]: Without dead ends: 1069 [2021-11-05 17:33:59,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:33:59,446 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 136 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.80ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:59,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 675 Invalid, 34 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 22.80ms Time] [2021-11-05 17:33:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-05 17:33:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 624. [2021-11-05 17:33:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.2969502407704654) internal successors, (808), 623 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 808 transitions. [2021-11-05 17:33:59,497 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 808 transitions. Word has length 96 [2021-11-05 17:33:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:59,498 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 808 transitions. [2021-11-05 17:33:59,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 808 transitions. [2021-11-05 17:33:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 17:33:59,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:59,499 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:33:59,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 17:33:59,499 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash -369507124, now seen corresponding path program 1 times [2021-11-05 17:33:59,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:59,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638142540] [2021-11-05 17:33:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:59,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:33:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:33:59,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:33:59,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638142540] [2021-11-05 17:33:59,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638142540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:33:59,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:33:59,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 17:33:59,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599470844] [2021-11-05 17:33:59,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:33:59,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 17:33:59,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:33:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 17:33:59,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 17:33:59,626 INFO L87 Difference]: Start difference. First operand 624 states and 808 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:33:59,898 INFO L93 Difference]: Finished difference Result 2276 states and 2960 transitions. [2021-11-05 17:33:59,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 17:33:59,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 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 98 [2021-11-05 17:33:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:33:59,903 INFO L225 Difference]: With dead ends: 2276 [2021-11-05 17:33:59,903 INFO L226 Difference]: Without dead ends: 1659 [2021-11-05 17:33:59,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 115.65ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-05 17:33:59,904 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 943 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.55ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.89ms IncrementalHoareTripleChecker+Time [2021-11-05 17:33:59,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1899 Invalid, 131 Unknown, 0 Unchecked, 3.55ms Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 86.89ms Time] [2021-11-05 17:33:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2021-11-05 17:33:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 648. [2021-11-05 17:33:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.285935085007728) internal successors, (832), 647 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 832 transitions. [2021-11-05 17:33:59,937 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 832 transitions. Word has length 98 [2021-11-05 17:33:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:33:59,937 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 832 transitions. [2021-11-05 17:33:59,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:33:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 832 transitions. [2021-11-05 17:33:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 17:33:59,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:33:59,938 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:33:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 17:33:59,939 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:33:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:33:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash -698583888, now seen corresponding path program 1 times [2021-11-05 17:33:59,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:33:59,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967807604] [2021-11-05 17:33:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:33:59,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:33:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:34:00,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:34:00,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967807604] [2021-11-05 17:34:00,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967807604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:34:00,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:34:00,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 17:34:00,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259096493] [2021-11-05 17:34:00,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:34:00,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 17:34:00,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:34:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 17:34:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:34:00,107 INFO L87 Difference]: Start difference. First operand 648 states and 832 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:34:00,361 INFO L93 Difference]: Finished difference Result 2750 states and 3578 transitions. [2021-11-05 17:34:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 17:34:00,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 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 100 [2021-11-05 17:34:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:34:00,367 INFO L225 Difference]: With dead ends: 2750 [2021-11-05 17:34:00,367 INFO L226 Difference]: Without dead ends: 2109 [2021-11-05 17:34:00,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 86.83ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-05 17:34:00,369 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 1107 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.14ms IncrementalHoareTripleChecker+Time [2021-11-05 17:34:00,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 1811 Invalid, 111 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 81.14ms Time] [2021-11-05 17:34:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-11-05 17:34:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 676. [2021-11-05 17:34:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.28) internal successors, (864), 675 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 864 transitions. [2021-11-05 17:34:00,407 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 864 transitions. Word has length 100 [2021-11-05 17:34:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:34:00,408 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 864 transitions. [2021-11-05 17:34:00,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 864 transitions. [2021-11-05 17:34:00,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-05 17:34:00,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:34:00,409 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:34:00,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 17:34:00,409 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:34:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:34:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash 777867468, now seen corresponding path program 1 times [2021-11-05 17:34:00,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:34:00,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854850515] [2021-11-05 17:34:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:34:00,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:34:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:34:00,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:34:00,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854850515] [2021-11-05 17:34:00,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854850515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:34:00,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:34:00,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:34:00,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728146406] [2021-11-05 17:34:00,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:34:00,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:34:00,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:34:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:34:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:34:00,492 INFO L87 Difference]: Start difference. First operand 676 states and 864 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:34:00,620 INFO L93 Difference]: Finished difference Result 2508 states and 3220 transitions. [2021-11-05 17:34:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:34:00,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-05 17:34:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:34:00,625 INFO L225 Difference]: With dead ends: 2508 [2021-11-05 17:34:00,625 INFO L226 Difference]: Without dead ends: 1839 [2021-11-05 17:34:00,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:34:00,627 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 395 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.94ms IncrementalHoareTripleChecker+Time [2021-11-05 17:34:00,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 928 Invalid, 48 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 35.94ms Time] [2021-11-05 17:34:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-11-05 17:34:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 692. [2021-11-05 17:34:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.2793053545586106) internal successors, (884), 691 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 884 transitions. [2021-11-05 17:34:00,693 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 884 transitions. Word has length 102 [2021-11-05 17:34:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:34:00,693 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 884 transitions. [2021-11-05 17:34:00,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 884 transitions. [2021-11-05 17:34:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-05 17:34:00,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:34:00,695 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:34:00,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 17:34:00,695 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:34:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:34:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash -370954712, now seen corresponding path program 1 times [2021-11-05 17:34:00,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:34:00,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474281249] [2021-11-05 17:34:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:34:00,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:34:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:34:00,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:34:00,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474281249] [2021-11-05 17:34:00,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474281249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:34:00,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:34:00,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 17:34:00,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214541607] [2021-11-05 17:34:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:34:00,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:34:00,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:34:00,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:34:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:34:00,782 INFO L87 Difference]: Start difference. First operand 692 states and 884 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:34:00,940 INFO L93 Difference]: Finished difference Result 2488 states and 3188 transitions. [2021-11-05 17:34:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 17:34:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-05 17:34:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:34:00,945 INFO L225 Difference]: With dead ends: 2488 [2021-11-05 17:34:00,945 INFO L226 Difference]: Without dead ends: 1803 [2021-11-05 17:34:00,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.81ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:34:00,947 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 330 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.96ms IncrementalHoareTripleChecker+Time [2021-11-05 17:34:00,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 1287 Invalid, 58 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 34.96ms Time] [2021-11-05 17:34:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-05 17:34:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 704. [2021-11-05 17:34:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.2745376955903271) internal successors, (896), 703 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 896 transitions. [2021-11-05 17:34:01,003 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 896 transitions. Word has length 104 [2021-11-05 17:34:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:34:01,003 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 896 transitions. [2021-11-05 17:34:01,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 896 transitions. [2021-11-05 17:34:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-05 17:34:01,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:34:01,005 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:34:01,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 17:34:01,005 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:34:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:34:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1848418332, now seen corresponding path program 1 times [2021-11-05 17:34:01,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:34:01,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033759177] [2021-11-05 17:34:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:34:01,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:34:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:34:01,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:34:01,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033759177] [2021-11-05 17:34:01,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033759177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:34:01,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:34:01,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 17:34:01,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597304311] [2021-11-05 17:34:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:34:01,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 17:34:01,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:34:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 17:34:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 17:34:01,192 INFO L87 Difference]: Start difference. First operand 704 states and 896 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:01,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:34:01,860 INFO L93 Difference]: Finished difference Result 2622 states and 3350 transitions. [2021-11-05 17:34:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 17:34:01,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-05 17:34:01,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:34:01,865 INFO L225 Difference]: With dead ends: 2622 [2021-11-05 17:34:01,866 INFO L226 Difference]: Without dead ends: 1925 [2021-11-05 17:34:01,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 295.28ms TimeCoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2021-11-05 17:34:01,867 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 1812 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 180.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.63ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 219.24ms IncrementalHoareTripleChecker+Time [2021-11-05 17:34:01,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 3555 Invalid, 357 Unknown, 0 Unchecked, 7.63ms Time], IncrementalHoareTripleChecker [27 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 219.24ms Time] [2021-11-05 17:34:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2021-11-05 17:34:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 704. [2021-11-05 17:34:01,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.271692745376956) internal successors, (894), 703 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 894 transitions. [2021-11-05 17:34:01,927 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 894 transitions. Word has length 106 [2021-11-05 17:34:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:34:01,927 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 894 transitions. [2021-11-05 17:34:01,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 894 transitions. [2021-11-05 17:34:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 17:34:01,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:34:01,928 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:34:01,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 17:34:01,929 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:34:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:34:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2119216531, now seen corresponding path program 1 times [2021-11-05 17:34:01,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:34:01,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763275501] [2021-11-05 17:34:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:34:01,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:34:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:34:02,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:34:02,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763275501] [2021-11-05 17:34:02,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763275501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:34:02,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:34:02,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:34:02,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478254365] [2021-11-05 17:34:02,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:34:02,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:34:02,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:34:02,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:34:02,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:34:02,039 INFO L87 Difference]: Start difference. First operand 704 states and 894 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:34:02,181 INFO L93 Difference]: Finished difference Result 2303 states and 2941 transitions. [2021-11-05 17:34:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:34:02,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 122 [2021-11-05 17:34:02,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:34:02,186 INFO L225 Difference]: With dead ends: 2303 [2021-11-05 17:34:02,186 INFO L226 Difference]: Without dead ends: 1606 [2021-11-05 17:34:02,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:34:02,187 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 262 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.64ms IncrementalHoareTripleChecker+Time [2021-11-05 17:34:02,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 638 Invalid, 13 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 17.64ms Time] [2021-11-05 17:34:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-11-05 17:34:02,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 712. [2021-11-05 17:34:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.2686357243319268) internal successors, (902), 711 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 902 transitions. [2021-11-05 17:34:02,277 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 902 transitions. Word has length 122 [2021-11-05 17:34:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:34:02,277 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 902 transitions. [2021-11-05 17:34:02,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 902 transitions. [2021-11-05 17:34:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 17:34:02,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:34:02,279 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:34:02,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 17:34:02,279 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:34:02,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:34:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1474686187, now seen corresponding path program 1 times [2021-11-05 17:34:02,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:34:02,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485019836] [2021-11-05 17:34:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:34:02,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:34:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:34:02,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:34:02,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485019836] [2021-11-05 17:34:02,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485019836] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:34:02,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843153230] [2021-11-05 17:34:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:34:02,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:34:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:34:02,372 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) [2021-11-05 17:34:02,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 17:34:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:02,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 17:34:02,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:34:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:34:02,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:34:02,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843153230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:34:02,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:34:02,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-05 17:34:02,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416328638] [2021-11-05 17:34:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:34:02,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:34:02,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:34:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:34:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:34:02,957 INFO L87 Difference]: Start difference. First operand 712 states and 902 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:34:03,188 INFO L93 Difference]: Finished difference Result 2123 states and 2692 transitions. [2021-11-05 17:34:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 17:34:03,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 122 [2021-11-05 17:34:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:34:03,195 INFO L225 Difference]: With dead ends: 2123 [2021-11-05 17:34:03,195 INFO L226 Difference]: Without dead ends: 2118 [2021-11-05 17:34:03,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:34:03,196 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 272 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.31ms IncrementalHoareTripleChecker+Time [2021-11-05 17:34:03,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 754 Invalid, 21 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 24.31ms Time] [2021-11-05 17:34:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2021-11-05 17:34:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2068. [2021-11-05 17:34:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2067 states have (on average 1.2752781809385583) internal successors, (2636), 2067 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2636 transitions. [2021-11-05 17:34:03,396 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2636 transitions. Word has length 122 [2021-11-05 17:34:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:34:03,396 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2636 transitions. [2021-11-05 17:34:03,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:34:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2636 transitions. [2021-11-05 17:34:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 17:34:03,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:34:03,399 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 17:34:03,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 17:34:03,615 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,SelfDestructingSolverStorable17 [2021-11-05 17:34:03,615 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 17:34:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:34:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1423028811, now seen corresponding path program 1 times [2021-11-05 17:34:03,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:34:03,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547354514] [2021-11-05 17:34:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:34:03,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:34:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:34:04,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:34:04,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547354514] [2021-11-05 17:34:04,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547354514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:34:04,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229718604] [2021-11-05 17:34:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:34:04,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:34:04,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:34:04,729 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) [2021-11-05 17:34:04,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 17:34:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:34:05,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-05 17:34:05,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:34:05,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 17:34:05,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-05 17:34:05,364 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 17:34:05,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 34 [2021-11-05 17:34:05,373 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-05 17:34:05,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-05 17:34:05,727 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-05 17:34:05,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 43 [2021-11-05 17:34:06,609 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-05 17:34:06,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 41 treesize of output 59 [2021-11-05 17:34:07,307 INFO L354 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2021-11-05 17:34:07,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 50 [2021-11-05 17:34:22,214 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-05 17:34:22,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2021-11-05 17:34:22,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-05 17:34:22,560 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-05 17:34:22,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2021-11-05 17:34:22,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-05 17:34:22,619 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-05 17:34:22,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 68 [2021-11-05 17:34:22,628 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 17:34:22,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2021-11-05 17:34:31,461 WARN L230 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 1000 DAG size of output: 390 [2021-11-05 17:34:31,462 INFO L354 Elim1Store]: treesize reduction 6824, result has 10.2 percent of original size [2021-11-05 17:34:31,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 77 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 81 new quantified variables, introduced 159 case distinctions, treesize of input 17871223 treesize of output 7458945 [2021-11-05 17:34:51,537 WARN L230 SmtUtils]: Spent 20.07s on a formula simplification that was a NOOP. DAG size: 2503 [2021-11-05 17:35:11,319 WARN L230 SmtUtils]: Spent 19.75s on a formula simplification that was a NOOP. DAG size: 2497 [2021-11-05 17:36:35,454 WARN L230 SmtUtils]: Spent 1.34m on a formula simplification. DAG size of input: 3231 DAG size of output: 1110 [2021-11-05 17:36:35,457 INFO L354 Elim1Store]: treesize reduction 32874, result has 15.5 percent of original size [2021-11-05 17:36:35,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 77 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 385 case distinctions, treesize of input 7459546 treesize of output 7463579 [2021-11-05 17:36:55,824 WARN L230 SmtUtils]: Spent 20.36s on a formula simplification that was a NOOP. DAG size: 3407 [2021-11-05 17:37:16,605 WARN L230 SmtUtils]: Spent 20.58s on a formula simplification that was a NOOP. DAG size: 3403 [2021-11-05 17:41:28,313 WARN L230 SmtUtils]: Spent 3.66m on a formula simplification. DAG size of input: 1809 DAG size of output: 1809 [2021-11-05 17:43:44,264 WARN L230 SmtUtils]: Spent 19.73s on a formula simplification that was a NOOP. DAG size: 1788 [2021-11-05 17:44:33,141 WARN L230 SmtUtils]: Spent 9.94s on a formula simplification that was a NOOP. DAG size: 1779 [2021-11-05 17:45:12,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:12,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 73 [2021-11-05 17:45:13,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:45:13,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2021-11-05 17:46:22,282 WARN L230 SmtUtils]: Spent 19.94s on a formula simplification that was a NOOP. DAG size: 1788 [2021-11-05 17:47:10,957 WARN L230 SmtUtils]: Spent 9.87s on a formula simplification that was a NOOP. DAG size: 1779 [2021-11-05 17:47:49,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:49,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 73 [2021-11-05 17:47:50,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 17:47:50,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 Killed by 15