./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.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 7325716246446e6137919cda7fc42ef01fc613ff512d250d81e88f25c6debe0a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 10:30:18,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:30:18,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:30:18,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:30:18,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:30:18,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:30:18,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:30:18,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:30:18,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:30:18,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:30:18,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:30:18,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:30:18,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:30:18,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:30:18,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:30:18,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:30:18,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:30:18,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:30:18,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:30:18,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:30:18,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:30:18,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:30:18,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:30:18,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:30:18,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:30:18,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:30:18,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:30:18,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:30:18,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:30:18,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:30:18,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:30:18,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:30:18,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:30:18,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:30:18,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:30:18,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:30:18,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:30:18,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:30:18,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:30:18,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:30:18,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:30:18,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 10:30:18,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:30:18,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:30:18,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:30:18,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:30:18,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:30:18,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:30:18,413 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:30:18,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:30:18,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 10:30:18,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:30:18,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:30:18,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:30:18,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:30:18,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:30:18,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:30:18,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:30:18,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:30:18,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:30:18,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:30:18,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:30:18,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:30:18,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:30:18,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:30:18,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 10:30:18,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 10:30:18,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:30:18,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:30:18,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:30:18,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:30:18,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7325716246446e6137919cda7fc42ef01fc613ff512d250d81e88f25c6debe0a [2021-11-07 10:30:18,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:30:18,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:30:18,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:30:18,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:30:18,636 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:30:18,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2021-11-07 10:30:18,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba7b5e20/d7e2790e3f3949f6be756095b52e2c07/FLAGbb3fdedca [2021-11-07 10:30:19,295 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:30:19,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2021-11-07 10:30:19,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba7b5e20/d7e2790e3f3949f6be756095b52e2c07/FLAGbb3fdedca [2021-11-07 10:30:19,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba7b5e20/d7e2790e3f3949f6be756095b52e2c07 [2021-11-07 10:30:19,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:30:19,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:30:19,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:30:19,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:30:19,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:30:19,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:30:19" (1/1) ... [2021-11-07 10:30:19,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ea34c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:19, skipping insertion in model container [2021-11-07 10:30:19,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:30:19" (1/1) ... [2021-11-07 10:30:19,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:30:19,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:30:20,175 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2021-11-07 10:30:20,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:30:20,236 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:30:20,378 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2021-11-07 10:30:20,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:30:20,417 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:30:20,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20 WrapperNode [2021-11-07 10:30:20,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:30:20,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:30:20,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:30:20,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:30:20,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:30:20,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:30:20,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:30:20,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:30:20,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:30:20,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:30:20,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:30:20,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:30:20,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (1/1) ... [2021-11-07 10:30:20,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:30:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:30:20,668 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) [2021-11-07 10:30:20,675 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 [2021-11-07 10:30:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 10:30:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:30:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 10:30:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 10:30:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:30:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 10:30:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 10:30:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 10:30:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 10:30:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:30:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:30:20,924 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 10:30:21,651 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-07 10:30:21,652 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-07 10:30:21,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:30:21,657 INFO L299 CfgBuilder]: Removed 135 assume(true) statements. [2021-11-07 10:30:21,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:30:21 BoogieIcfgContainer [2021-11-07 10:30:21,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:30:21,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:30:21,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:30:21,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:30:21,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:30:19" (1/3) ... [2021-11-07 10:30:21,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6414f820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:30:21, skipping insertion in model container [2021-11-07 10:30:21,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:20" (2/3) ... [2021-11-07 10:30:21,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6414f820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:30:21, skipping insertion in model container [2021-11-07 10:30:21,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:30:21" (3/3) ... [2021-11-07 10:30:21,665 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2021-11-07 10:30:21,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:30:21,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 10:30:21,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:30:21,721 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 [2021-11-07 10:30:21,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 10:30:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 124 states have (on average 1.467741935483871) internal successors, (182), 130 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 10:30:21,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:21,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:21,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1802508012, now seen corresponding path program 1 times [2021-11-07 10:30:21,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:21,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858926911] [2021-11-07 10:30:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:21,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:22,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:22,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858926911] [2021-11-07 10:30:22,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858926911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:22,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:22,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:30:22,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143955966] [2021-11-07 10:30:22,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:22,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:30:22,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:30:22,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:22,110 INFO L87 Difference]: Start difference. First operand has 131 states, 124 states have (on average 1.467741935483871) internal successors, (182), 130 states have internal predecessors, (182), 0 states have call successors, (0), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:22,187 INFO L93 Difference]: Finished difference Result 360 states and 509 transitions. [2021-11-07 10:30:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:30:22,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 10:30:22,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:22,199 INFO L225 Difference]: With dead ends: 360 [2021-11-07 10:30:22,199 INFO L226 Difference]: Without dead ends: 226 [2021-11-07 10:30:22,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:22,207 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 144 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.21ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.14ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:22,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 338 Invalid, 15 Unknown, 0 Unchecked, 6.21ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 18.14ms Time] [2021-11-07 10:30:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-07 10:30:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2021-11-07 10:30:22,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 212 states have (on average 1.2877358490566038) internal successors, (273), 217 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 273 transitions. [2021-11-07 10:30:22,275 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 273 transitions. Word has length 11 [2021-11-07 10:30:22,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:22,275 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 273 transitions. [2021-11-07 10:30:22,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,275 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 273 transitions. [2021-11-07 10:30:22,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 10:30:22,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:22,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:22,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 10:30:22,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash 43172304, now seen corresponding path program 1 times [2021-11-07 10:30:22,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:22,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820875911] [2021-11-07 10:30:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:22,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:22,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:22,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820875911] [2021-11-07 10:30:22,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820875911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:22,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:22,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:30:22,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089620010] [2021-11-07 10:30:22,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:22,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:30:22,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:30:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:22,369 INFO L87 Difference]: Start difference. First operand 218 states and 273 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:22,401 INFO L93 Difference]: Finished difference Result 630 states and 792 transitions. [2021-11-07 10:30:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:30:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 10:30:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:22,404 INFO L225 Difference]: With dead ends: 630 [2021-11-07 10:30:22,404 INFO L226 Difference]: Without dead ends: 418 [2021-11-07 10:30:22,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:22,410 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 131 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.45ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:22,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 274 Invalid, 13 Unknown, 0 Unchecked, 3.59ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 11.45ms Time] [2021-11-07 10:30:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-07 10:30:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 404. [2021-11-07 10:30:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 398 states have (on average 1.2814070351758795) internal successors, (510), 403 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 510 transitions. [2021-11-07 10:30:22,442 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 510 transitions. Word has length 12 [2021-11-07 10:30:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:22,442 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 510 transitions. [2021-11-07 10:30:22,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 510 transitions. [2021-11-07 10:30:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 10:30:22,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:22,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:22,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 10:30:22,447 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -803172382, now seen corresponding path program 1 times [2021-11-07 10:30:22,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:22,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313910471] [2021-11-07 10:30:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:22,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:22,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:22,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313910471] [2021-11-07 10:30:22,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313910471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:22,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:22,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:30:22,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599390758] [2021-11-07 10:30:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:22,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:30:22,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:30:22,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:22,547 INFO L87 Difference]: Start difference. First operand 404 states and 510 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:22,571 INFO L93 Difference]: Finished difference Result 835 states and 1069 transitions. [2021-11-07 10:30:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:30:22,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 10:30:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:22,573 INFO L225 Difference]: With dead ends: 835 [2021-11-07 10:30:22,574 INFO L226 Difference]: Without dead ends: 439 [2021-11-07 10:30:22,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:22,580 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 99 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.60ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.27ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:22,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 187 Invalid, 15 Unknown, 0 Unchecked, 0.60ms Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 12.27ms Time] [2021-11-07 10:30:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-07 10:30:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-07 10:30:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 433 states have (on average 1.2840646651270209) internal successors, (556), 438 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 556 transitions. [2021-11-07 10:30:22,594 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 556 transitions. Word has length 28 [2021-11-07 10:30:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:22,595 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 556 transitions. [2021-11-07 10:30:22,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 556 transitions. [2021-11-07 10:30:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 10:30:22,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:22,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:22,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 10:30:22,597 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:22,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash 225824829, now seen corresponding path program 1 times [2021-11-07 10:30:22,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:22,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944692699] [2021-11-07 10:30:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:22,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:22,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:22,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944692699] [2021-11-07 10:30:22,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944692699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:22,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:22,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:30:22,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856717399] [2021-11-07 10:30:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:22,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:30:22,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:30:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:30:22,766 INFO L87 Difference]: Start difference. First operand 439 states and 556 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:23,138 INFO L93 Difference]: Finished difference Result 2659 states and 3328 transitions. [2021-11-07 10:30:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 10:30:23,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-07 10:30:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:23,146 INFO L225 Difference]: With dead ends: 2659 [2021-11-07 10:30:23,147 INFO L226 Difference]: Without dead ends: 2229 [2021-11-07 10:30:23,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 104.75ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 10:30:23,153 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 1180 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.88ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:23,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 1380 Invalid, 144 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 164.88ms Time] [2021-11-07 10:30:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-11-07 10:30:23,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 483. [2021-11-07 10:30:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 477 states have (on average 1.2662473794549267) internal successors, (604), 482 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 604 transitions. [2021-11-07 10:30:23,192 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 604 transitions. Word has length 46 [2021-11-07 10:30:23,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:23,193 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 604 transitions. [2021-11-07 10:30:23,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 604 transitions. [2021-11-07 10:30:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 10:30:23,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:23,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:23,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 10:30:23,199 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash 248457083, now seen corresponding path program 1 times [2021-11-07 10:30:23,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:23,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276635397] [2021-11-07 10:30:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:23,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:23,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:23,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276635397] [2021-11-07 10:30:23,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276635397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:23,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:23,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:30:23,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754796566] [2021-11-07 10:30:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:23,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:30:23,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:23,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:30:23,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:23,303 INFO L87 Difference]: Start difference. First operand 483 states and 604 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:23,531 INFO L93 Difference]: Finished difference Result 2506 states and 3100 transitions. [2021-11-07 10:30:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:30:23,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-07 10:30:23,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:23,538 INFO L225 Difference]: With dead ends: 2506 [2021-11-07 10:30:23,538 INFO L226 Difference]: Without dead ends: 2257 [2021-11-07 10:30:23,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.68ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:30:23,539 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 854 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.20ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:23,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 993 Invalid, 78 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 56.20ms Time] [2021-11-07 10:30:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-11-07 10:30:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 495. [2021-11-07 10:30:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 489 states have (on average 1.2597137014314927) internal successors, (616), 494 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 616 transitions. [2021-11-07 10:30:23,578 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 616 transitions. Word has length 46 [2021-11-07 10:30:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:23,579 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 616 transitions. [2021-11-07 10:30:23,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,579 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 616 transitions. [2021-11-07 10:30:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 10:30:23,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:23,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:23,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 10:30:23,580 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:23,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1031406595, now seen corresponding path program 1 times [2021-11-07 10:30:23,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:23,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917729660] [2021-11-07 10:30:23,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:23,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:23,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:23,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917729660] [2021-11-07 10:30:23,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917729660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:23,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:23,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:30:23,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680859864] [2021-11-07 10:30:23,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:23,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:30:23,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:23,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:30:23,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:30:23,670 INFO L87 Difference]: Start difference. First operand 495 states and 616 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:23,941 INFO L93 Difference]: Finished difference Result 2611 states and 3230 transitions. [2021-11-07 10:30:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 10:30:23,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-07 10:30:23,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:23,950 INFO L225 Difference]: With dead ends: 2611 [2021-11-07 10:30:23,950 INFO L226 Difference]: Without dead ends: 2125 [2021-11-07 10:30:23,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 55.70ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 10:30:23,952 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 580 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.69ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:23,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 2561 Invalid, 157 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 84.69ms Time] [2021-11-07 10:30:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2021-11-07 10:30:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 493. [2021-11-07 10:30:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 487 states have (on average 1.2525667351129364) internal successors, (610), 492 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 610 transitions. [2021-11-07 10:30:23,995 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 610 transitions. Word has length 46 [2021-11-07 10:30:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:23,996 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 610 transitions. [2021-11-07 10:30:23,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 610 transitions. [2021-11-07 10:30:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 10:30:23,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:23,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:23,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 10:30:23,998 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2143426174, now seen corresponding path program 1 times [2021-11-07 10:30:23,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:23,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448218821] [2021-11-07 10:30:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:23,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:24,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:24,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448218821] [2021-11-07 10:30:24,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448218821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:24,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:24,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:30:24,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504362382] [2021-11-07 10:30:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:24,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:30:24,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:24,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:30:24,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:24,084 INFO L87 Difference]: Start difference. First operand 493 states and 610 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:24,334 INFO L93 Difference]: Finished difference Result 2570 states and 3159 transitions. [2021-11-07 10:30:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:30:24,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 10:30:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:24,341 INFO L225 Difference]: With dead ends: 2570 [2021-11-07 10:30:24,341 INFO L226 Difference]: Without dead ends: 2316 [2021-11-07 10:30:24,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.77ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:30:24,343 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 638 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.94ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:24,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 1236 Invalid, 96 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 59.94ms Time] [2021-11-07 10:30:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-11-07 10:30:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 505. [2021-11-07 10:30:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 499 states have (on average 1.2464929859719438) internal successors, (622), 504 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 622 transitions. [2021-11-07 10:30:24,426 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 622 transitions. Word has length 51 [2021-11-07 10:30:24,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:24,426 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 622 transitions. [2021-11-07 10:30:24,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 622 transitions. [2021-11-07 10:30:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 10:30:24,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:24,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:24,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 10:30:24,428 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:24,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:24,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1471482752, now seen corresponding path program 1 times [2021-11-07 10:30:24,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:24,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240580430] [2021-11-07 10:30:24,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:24,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:24,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:24,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240580430] [2021-11-07 10:30:24,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240580430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:24,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:24,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:30:24,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104039067] [2021-11-07 10:30:24,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:24,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:30:24,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:30:24,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:24,495 INFO L87 Difference]: Start difference. First operand 505 states and 622 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:24,554 INFO L93 Difference]: Finished difference Result 1054 states and 1298 transitions. [2021-11-07 10:30:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:30:24,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 10:30:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:24,557 INFO L225 Difference]: With dead ends: 1054 [2021-11-07 10:30:24,557 INFO L226 Difference]: Without dead ends: 558 [2021-11-07 10:30:24,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:24,558 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 72 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.21ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:24,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 573 Invalid, 12 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 9.21ms Time] [2021-11-07 10:30:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-07 10:30:24,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 346. [2021-11-07 10:30:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 340 states have (on average 1.2352941176470589) internal successors, (420), 345 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 420 transitions. [2021-11-07 10:30:24,588 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 420 transitions. Word has length 51 [2021-11-07 10:30:24,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:24,588 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 420 transitions. [2021-11-07 10:30:24,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 420 transitions. [2021-11-07 10:30:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 10:30:24,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:24,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:24,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 10:30:24,589 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash -934513600, now seen corresponding path program 1 times [2021-11-07 10:30:24,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:24,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673570741] [2021-11-07 10:30:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:24,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:24,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:24,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:24,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673570741] [2021-11-07 10:30:24,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673570741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:24,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:24,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:30:24,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191826563] [2021-11-07 10:30:24,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:24,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:30:24,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:24,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:30:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:24,656 INFO L87 Difference]: Start difference. First operand 346 states and 420 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:24,790 INFO L93 Difference]: Finished difference Result 615 states and 744 transitions. [2021-11-07 10:30:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:30:24,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 10:30:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:24,792 INFO L225 Difference]: With dead ends: 615 [2021-11-07 10:30:24,792 INFO L226 Difference]: Without dead ends: 611 [2021-11-07 10:30:24,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.62ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:24,792 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 161 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.97ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:24,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 474 Invalid, 28 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 75.97ms Time] [2021-11-07 10:30:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-11-07 10:30:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 586. [2021-11-07 10:30:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 580 states have (on average 1.2379310344827585) internal successors, (718), 585 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 718 transitions. [2021-11-07 10:30:24,837 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 718 transitions. Word has length 51 [2021-11-07 10:30:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:24,838 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 718 transitions. [2021-11-07 10:30:24,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 718 transitions. [2021-11-07 10:30:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 10:30:24,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:24,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:24,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 10:30:24,839 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 259265857, now seen corresponding path program 1 times [2021-11-07 10:30:24,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:24,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266560784] [2021-11-07 10:30:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:24,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:24,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:24,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266560784] [2021-11-07 10:30:24,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266560784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:24,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:24,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:30:24,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358871470] [2021-11-07 10:30:24,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:24,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:30:24,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:30:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:24,913 INFO L87 Difference]: Start difference. First operand 586 states and 718 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:25,063 INFO L93 Difference]: Finished difference Result 1203 states and 1465 transitions. [2021-11-07 10:30:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:30:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-07 10:30:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:25,065 INFO L225 Difference]: With dead ends: 1203 [2021-11-07 10:30:25,065 INFO L226 Difference]: Without dead ends: 605 [2021-11-07 10:30:25,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.77ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:30:25,067 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 85 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.55ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:25,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 513 Invalid, 17 Unknown, 0 Unchecked, 0.78ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 58.55ms Time] [2021-11-07 10:30:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-07 10:30:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 541. [2021-11-07 10:30:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 535 states have (on average 1.2411214953271028) internal successors, (664), 540 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 664 transitions. [2021-11-07 10:30:25,114 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 664 transitions. Word has length 52 [2021-11-07 10:30:25,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:25,114 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 664 transitions. [2021-11-07 10:30:25,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 664 transitions. [2021-11-07 10:30:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 10:30:25,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:25,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:25,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 10:30:25,116 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash -489258623, now seen corresponding path program 1 times [2021-11-07 10:30:25,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:25,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152862783] [2021-11-07 10:30:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:25,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:25,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:25,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152862783] [2021-11-07 10:30:25,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152862783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:25,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:25,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:30:25,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303645995] [2021-11-07 10:30:25,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:25,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:30:25,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:25,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:30:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:30:25,189 INFO L87 Difference]: Start difference. First operand 541 states and 664 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:25,387 INFO L93 Difference]: Finished difference Result 1578 states and 1914 transitions. [2021-11-07 10:30:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 10:30:25,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-07 10:30:25,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:25,391 INFO L225 Difference]: With dead ends: 1578 [2021-11-07 10:30:25,391 INFO L226 Difference]: Without dead ends: 1071 [2021-11-07 10:30:25,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 44.82ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 10:30:25,392 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 645 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.55ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:25,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 1369 Invalid, 105 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 49.55ms Time] [2021-11-07 10:30:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-11-07 10:30:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 539. [2021-11-07 10:30:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 533 states have (on average 1.2345215759849906) internal successors, (658), 538 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 658 transitions. [2021-11-07 10:30:25,456 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 658 transitions. Word has length 58 [2021-11-07 10:30:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:25,456 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 658 transitions. [2021-11-07 10:30:25,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 658 transitions. [2021-11-07 10:30:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 10:30:25,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:25,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:25,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 10:30:25,458 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash 123879707, now seen corresponding path program 1 times [2021-11-07 10:30:25,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:25,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114590943] [2021-11-07 10:30:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:25,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:25,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:25,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114590943] [2021-11-07 10:30:25,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114590943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:25,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:25,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:30:25,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25897735] [2021-11-07 10:30:25,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:25,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:30:25,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:30:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:25,519 INFO L87 Difference]: Start difference. First operand 539 states and 658 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:25,602 INFO L93 Difference]: Finished difference Result 1073 states and 1300 transitions. [2021-11-07 10:30:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:30:25,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 10:30:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:25,604 INFO L225 Difference]: With dead ends: 1073 [2021-11-07 10:30:25,604 INFO L226 Difference]: Without dead ends: 568 [2021-11-07 10:30:25,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:25,605 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 129 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.22ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:25,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 380 Invalid, 8 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.22ms Time] [2021-11-07 10:30:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-07 10:30:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 511. [2021-11-07 10:30:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 505 states have (on average 1.2118811881188118) internal successors, (612), 510 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 612 transitions. [2021-11-07 10:30:25,665 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 612 transitions. Word has length 59 [2021-11-07 10:30:25,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:25,665 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 612 transitions. [2021-11-07 10:30:25,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,665 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 612 transitions. [2021-11-07 10:30:25,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 10:30:25,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:25,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:25,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 10:30:25,666 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:25,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2029608918, now seen corresponding path program 1 times [2021-11-07 10:30:25,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:25,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044355524] [2021-11-07 10:30:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:25,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:25,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:25,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044355524] [2021-11-07 10:30:25,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044355524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:25,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:25,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:30:25,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409469536] [2021-11-07 10:30:25,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:25,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:30:25,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:25,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:30:25,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:25,769 INFO L87 Difference]: Start difference. First operand 511 states and 612 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:25,848 INFO L93 Difference]: Finished difference Result 1016 states and 1217 transitions. [2021-11-07 10:30:25,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:30:25,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-07 10:30:25,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:25,850 INFO L225 Difference]: With dead ends: 1016 [2021-11-07 10:30:25,850 INFO L226 Difference]: Without dead ends: 511 [2021-11-07 10:30:25,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.86ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:30:25,851 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 3 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.65ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:25,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 566 Invalid, 13 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 6.65ms Time] [2021-11-07 10:30:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-07 10:30:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2021-11-07 10:30:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 505 states have (on average 1.2099009900990099) internal successors, (611), 510 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 611 transitions. [2021-11-07 10:30:25,908 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 611 transitions. Word has length 61 [2021-11-07 10:30:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:25,908 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 611 transitions. [2021-11-07 10:30:25,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 611 transitions. [2021-11-07 10:30:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 10:30:25,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:25,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:25,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 10:30:25,909 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:25,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2070283668, now seen corresponding path program 1 times [2021-11-07 10:30:25,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:25,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678830082] [2021-11-07 10:30:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:25,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:26,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:26,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678830082] [2021-11-07 10:30:26,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678830082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:26,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:26,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:30:26,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060441844] [2021-11-07 10:30:26,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:26,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:30:26,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:30:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:26,002 INFO L87 Difference]: Start difference. First operand 511 states and 611 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:26,185 INFO L93 Difference]: Finished difference Result 1408 states and 1689 transitions. [2021-11-07 10:30:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:30:26,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-07 10:30:26,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:26,188 INFO L225 Difference]: With dead ends: 1408 [2021-11-07 10:30:26,188 INFO L226 Difference]: Without dead ends: 1083 [2021-11-07 10:30:26,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.63ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:26,189 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 154 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.44ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:26,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 472 Invalid, 30 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 58.44ms Time] [2021-11-07 10:30:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-11-07 10:30:26,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 880. [2021-11-07 10:30:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 874 states have (on average 1.2185354691075514) internal successors, (1065), 879 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1065 transitions. [2021-11-07 10:30:26,284 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1065 transitions. Word has length 61 [2021-11-07 10:30:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:26,285 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1065 transitions. [2021-11-07 10:30:26,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1065 transitions. [2021-11-07 10:30:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 10:30:26,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:26,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:26,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 10:30:26,286 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1960369742, now seen corresponding path program 1 times [2021-11-07 10:30:26,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:26,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690919432] [2021-11-07 10:30:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:26,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:26,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:26,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690919432] [2021-11-07 10:30:26,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690919432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:26,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:26,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:30:26,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225390789] [2021-11-07 10:30:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:26,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:30:26,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:30:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:26,352 INFO L87 Difference]: Start difference. First operand 880 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:26,433 INFO L93 Difference]: Finished difference Result 1323 states and 1591 transitions. [2021-11-07 10:30:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:30:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 10:30:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:26,435 INFO L225 Difference]: With dead ends: 1323 [2021-11-07 10:30:26,436 INFO L226 Difference]: Without dead ends: 520 [2021-11-07 10:30:26,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:26,437 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 21 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.31ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:26,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 457 Invalid, 10 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 7.31ms Time] [2021-11-07 10:30:26,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-07 10:30:26,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 499. [2021-11-07 10:30:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 493 states have (on average 1.206896551724138) internal successors, (595), 498 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 595 transitions. [2021-11-07 10:30:26,478 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 595 transitions. Word has length 67 [2021-11-07 10:30:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:26,478 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 595 transitions. [2021-11-07 10:30:26,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,478 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 595 transitions. [2021-11-07 10:30:26,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 10:30:26,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:26,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:26,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 10:30:26,479 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:26,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1965673074, now seen corresponding path program 1 times [2021-11-07 10:30:26,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:26,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467419704] [2021-11-07 10:30:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:26,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:26,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:26,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467419704] [2021-11-07 10:30:26,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467419704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:26,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:26,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:30:26,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038969320] [2021-11-07 10:30:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:26,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:30:26,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:26,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:30:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:26,553 INFO L87 Difference]: Start difference. First operand 499 states and 595 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:26,667 INFO L93 Difference]: Finished difference Result 828 states and 984 transitions. [2021-11-07 10:30:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:30:26,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 10:30:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:26,669 INFO L225 Difference]: With dead ends: 828 [2021-11-07 10:30:26,669 INFO L226 Difference]: Without dead ends: 821 [2021-11-07 10:30:26,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.09ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:26,670 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 110 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.61ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:26,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 434 Invalid, 30 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 47.61ms Time] [2021-11-07 10:30:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-11-07 10:30:26,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 738. [2021-11-07 10:30:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 732 states have (on average 1.215846994535519) internal successors, (890), 737 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 890 transitions. [2021-11-07 10:30:26,766 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 890 transitions. Word has length 67 [2021-11-07 10:30:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:26,766 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 890 transitions. [2021-11-07 10:30:26,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 890 transitions. [2021-11-07 10:30:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 10:30:26,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:26,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:26,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 10:30:26,767 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash 495831049, now seen corresponding path program 1 times [2021-11-07 10:30:26,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:26,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075856718] [2021-11-07 10:30:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:26,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:26,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:26,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075856718] [2021-11-07 10:30:26,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075856718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:26,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:26,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:30:26,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678534029] [2021-11-07 10:30:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:26,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:30:26,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:30:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:26,835 INFO L87 Difference]: Start difference. First operand 738 states and 890 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:26,937 INFO L93 Difference]: Finished difference Result 848 states and 1022 transitions. [2021-11-07 10:30:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:30:26,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 10:30:26,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:26,940 INFO L225 Difference]: With dead ends: 848 [2021-11-07 10:30:26,940 INFO L226 Difference]: Without dead ends: 839 [2021-11-07 10:30:26,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:26,941 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 221 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.03ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:26,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 311 Invalid, 11 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 14.03ms Time] [2021-11-07 10:30:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-07 10:30:27,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 742. [2021-11-07 10:30:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 736 states have (on average 1.2092391304347827) internal successors, (890), 741 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 890 transitions. [2021-11-07 10:30:27,008 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 890 transitions. Word has length 68 [2021-11-07 10:30:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:27,008 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 890 transitions. [2021-11-07 10:30:27,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 890 transitions. [2021-11-07 10:30:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 10:30:27,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:27,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:27,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 10:30:27,009 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:27,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1259237824, now seen corresponding path program 1 times [2021-11-07 10:30:27,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:27,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067145026] [2021-11-07 10:30:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:27,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:27,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:27,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067145026] [2021-11-07 10:30:27,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067145026] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 10:30:27,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870085791] [2021-11-07 10:30:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:27,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:30:27,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:30:27,096 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) [2021-11-07 10:30:27,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 10:30:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:27,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:30:27,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:30:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:27,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:30:27,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870085791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:27,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 10:30:27,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 10:30:27,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334590622] [2021-11-07 10:30:27,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:27,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:30:27,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:30:27,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:27,558 INFO L87 Difference]: Start difference. First operand 742 states and 890 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:27,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:27,607 INFO L93 Difference]: Finished difference Result 1044 states and 1254 transitions. [2021-11-07 10:30:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:30:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-07 10:30:27,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:27,609 INFO L225 Difference]: With dead ends: 1044 [2021-11-07 10:30:27,609 INFO L226 Difference]: Without dead ends: 379 [2021-11-07 10:30:27,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:27,610 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 109 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.41ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:27,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 244 Invalid, 17 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 9.41ms Time] [2021-11-07 10:30:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-07 10:30:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2021-11-07 10:30:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 340 states have (on average 1.1794117647058824) internal successors, (401), 343 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 401 transitions. [2021-11-07 10:30:27,647 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 401 transitions. Word has length 72 [2021-11-07 10:30:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:27,648 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 401 transitions. [2021-11-07 10:30:27,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 401 transitions. [2021-11-07 10:30:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 10:30:27,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:27,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:27,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 10:30:27,863 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 [2021-11-07 10:30:27,863 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:27,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1340649389, now seen corresponding path program 1 times [2021-11-07 10:30:27,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:27,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764707437] [2021-11-07 10:30:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:27,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:27,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:27,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764707437] [2021-11-07 10:30:27,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764707437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:27,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:27,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:30:27,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036438732] [2021-11-07 10:30:27,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:27,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:30:27,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:30:27,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:27,980 INFO L87 Difference]: Start difference. First operand 344 states and 401 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:28,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:28,019 INFO L93 Difference]: Finished difference Result 572 states and 667 transitions. [2021-11-07 10:30:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:30:28,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 10:30:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:28,021 INFO L225 Difference]: With dead ends: 572 [2021-11-07 10:30:28,021 INFO L226 Difference]: Without dead ends: 270 [2021-11-07 10:30:28,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:30:28,022 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 122 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.51ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:28,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 302 Invalid, 8 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 7.51ms Time] [2021-11-07 10:30:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-07 10:30:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-11-07 10:30:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 266 states have (on average 1.150375939849624) internal successors, (306), 269 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 306 transitions. [2021-11-07 10:30:28,050 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 306 transitions. Word has length 81 [2021-11-07 10:30:28,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:28,050 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 306 transitions. [2021-11-07 10:30:28,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:28,051 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 306 transitions. [2021-11-07 10:30:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 10:30:28,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:28,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:28,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 10:30:28,051 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1965874040, now seen corresponding path program 1 times [2021-11-07 10:30:28,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:28,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285428546] [2021-11-07 10:30:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:28,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:28,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:28,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285428546] [2021-11-07 10:30:28,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285428546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:28,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:28,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:30:28,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839776564] [2021-11-07 10:30:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:28,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:30:28,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:28,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:30:28,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:28,291 INFO L87 Difference]: Start difference. First operand 270 states and 306 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:28,383 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2021-11-07 10:30:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:30:28,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 10:30:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:28,384 INFO L225 Difference]: With dead ends: 272 [2021-11-07 10:30:28,384 INFO L226 Difference]: Without dead ends: 222 [2021-11-07 10:30:28,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.43ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:30:28,385 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 76 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.85ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:28,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 303 Invalid, 17 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 45.85ms Time] [2021-11-07 10:30:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-07 10:30:28,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 138. [2021-11-07 10:30:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.1240875912408759) internal successors, (154), 137 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2021-11-07 10:30:28,409 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 83 [2021-11-07 10:30:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:28,409 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2021-11-07 10:30:28,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2021-11-07 10:30:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 10:30:28,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:30:28,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:30:28,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 10:30:28,413 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 10:30:28,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:30:28,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2143833696, now seen corresponding path program 1 times [2021-11-07 10:30:28,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:30:28,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561691788] [2021-11-07 10:30:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:30:28,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:30:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:30:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:30:28,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:30:28,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561691788] [2021-11-07 10:30:28,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561691788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:30:28,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:30:28,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:30:28,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871020423] [2021-11-07 10:30:28,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:30:28,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:30:28,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:30:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:30:28,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:30:28,499 INFO L87 Difference]: Start difference. First operand 138 states and 154 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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) [2021-11-07 10:30:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:30:28,580 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2021-11-07 10:30:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:30:28,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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 99 [2021-11-07 10:30:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:30:28,581 INFO L225 Difference]: With dead ends: 138 [2021-11-07 10:30:28,581 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 10:30:28,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.85ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:30:28,582 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 51 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.29ms IncrementalHoareTripleChecker+Time [2021-11-07 10:30:28,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 389 Invalid, 13 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 59.29ms Time] [2021-11-07 10:30:28,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 10:30:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 10:30:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:30:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 10:30:28,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2021-11-07 10:30:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:30:28,583 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 10:30:28,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 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) [2021-11-07 10:30:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 10:30:28,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 10:30:28,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-07 10:30:28,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-07 10:30:28,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-07 10:30:28,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-07 10:30:28,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-07 10:30:28,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-07 10:30:28,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 10:30:28,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 10:32:22,074 WARN L227 SmtUtils]: Spent 1.89m on a formula simplification. DAG size of input: 220 DAG size of output: 186 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-07 10:32:29,515 WARN L227 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 158 DAG size of output: 112 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15