./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cef1fa067bbb4b41514033d4724b62c75373060841bf986b96d67600e77c9e6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:07:05,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:07:05,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:07:05,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:07:05,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:07:05,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:07:05,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:07:05,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:07:05,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:07:05,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:07:05,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:07:05,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:07:05,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:07:05,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:07:05,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:07:05,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:07:05,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:07:05,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:07:05,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:07:05,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:07:05,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:07:05,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:07:05,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:07:05,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:07:05,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:07:05,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:07:05,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:07:05,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:07:05,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:07:05,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:07:05,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:07:05,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:07:05,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:07:05,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:07:05,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:07:05,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:07:05,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:07:05,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:07:05,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:07:05,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:07:05,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:07:05,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:07:05,686 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:07:05,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:07:05,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:07:05,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:07:05,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:07:05,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:07:05,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:07:05,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:07:05,688 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:07:05,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:07:05,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:07:05,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:07:05,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:07:05,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:07:05,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:07:05,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:07:05,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:07:05,690 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:07:05,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:07:05,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:07:05,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:07:05,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:07:05,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:07:05,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:07:05,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:07:05,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:07:05,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:07:05,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:07:05,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:07:05,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:07:05,693 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:07:05,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:07:05,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:07:05,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:07:05,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cef1fa067bbb4b41514033d4724b62c75373060841bf986b96d67600e77c9e6 [2021-12-22 13:07:05,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:07:05,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:07:05,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:07:05,930 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:07:05,930 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:07:05,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c [2021-12-22 13:07:05,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1313f70e1/5f40f32826954ca39cb4e5eaea5de7d7/FLAGc54fe3982 [2021-12-22 13:07:06,632 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:07:06,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c [2021-12-22 13:07:06,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1313f70e1/5f40f32826954ca39cb4e5eaea5de7d7/FLAGc54fe3982 [2021-12-22 13:07:06,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1313f70e1/5f40f32826954ca39cb4e5eaea5de7d7 [2021-12-22 13:07:06,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:07:06,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:07:06,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:07:06,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:07:06,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:07:06,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:07:06" (1/1) ... [2021-12-22 13:07:06,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773061db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:06, skipping insertion in model container [2021-12-22 13:07:06,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:07:06" (1/1) ... [2021-12-22 13:07:06,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:07:06,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:07:07,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c[26897,26910] [2021-12-22 13:07:07,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c[32452,32465] [2021-12-22 13:07:07,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:07:07,925 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:07:07,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c[26897,26910] [2021-12-22 13:07:07,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c[32452,32465] [2021-12-22 13:07:08,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:07:08,372 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:07:08,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08 WrapperNode [2021-12-22 13:07:08,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:07:08,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:07:08,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:07:08,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:07:08,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:08,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:08,801 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5282 [2021-12-22 13:07:08,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:07:08,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:07:08,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:07:08,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:07:08,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:08,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:08,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:08,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:09,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:09,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:09,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:09,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:07:09,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:07:09,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:07:09,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:07:09,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (1/1) ... [2021-12-22 13:07:09,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:07:09,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:07:09,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:07:09,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:07:09,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:07:09,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:07:09,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:07:09,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:07:09,523 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:07:09,525 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:07:13,126 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:07:13,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:07:13,145 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:07:13,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:07:13 BoogieIcfgContainer [2021-12-22 13:07:13,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:07:13,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:07:13,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:07:13,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:07:13,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:07:06" (1/3) ... [2021-12-22 13:07:13,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ef7952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:07:13, skipping insertion in model container [2021-12-22 13:07:13,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:08" (2/3) ... [2021-12-22 13:07:13,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ef7952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:07:13, skipping insertion in model container [2021-12-22 13:07:13,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:07:13" (3/3) ... [2021-12-22 13:07:13,160 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals+Problem12_label01.c [2021-12-22 13:07:13,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:07:13,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:07:13,221 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:07:13,229 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 [2021-12-22 13:07:13,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:07:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 13:07:13,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:13,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:13,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2107180874, now seen corresponding path program 1 times [2021-12-22 13:07:13,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:13,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576863939] [2021-12-22 13:07:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:13,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:13,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:13,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576863939] [2021-12-22 13:07:13,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576863939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:13,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:13,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:07:13,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123157383] [2021-12-22 13:07:13,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:13,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:07:13,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:07:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:07:13,537 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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) [2021-12-22 13:07:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:13,602 INFO L93 Difference]: Finished difference Result 1859 states and 3512 transitions. [2021-12-22 13:07:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:07:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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 [2021-12-22 13:07:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:13,631 INFO L225 Difference]: With dead ends: 1859 [2021-12-22 13:07:13,635 INFO L226 Difference]: Without dead ends: 897 [2021-12-22 13:07:13,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:07:13,649 INFO L933 BasicCegarLoop]: 1755 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:13,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-22 13:07:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-22 13:07:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.8860335195530726) internal successors, (1688), 896 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1688 transitions. [2021-12-22 13:07:13,732 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1688 transitions. Word has length 46 [2021-12-22 13:07:13,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:13,733 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1688 transitions. [2021-12-22 13:07:13,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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) [2021-12-22 13:07:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1688 transitions. [2021-12-22 13:07:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 13:07:13,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:13,735 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] [2021-12-22 13:07:13,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:07:13,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2021-12-22 13:07:13,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:13,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11544271] [2021-12-22 13:07:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:13,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:13,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:13,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11544271] [2021-12-22 13:07:13,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11544271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:13,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:13,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:07:13,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322518095] [2021-12-22 13:07:13,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:13,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:07:13,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:07:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:07:13,847 INFO L87 Difference]: Start difference. First operand 897 states and 1688 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) [2021-12-22 13:07:14,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:14,008 INFO L93 Difference]: Finished difference Result 977 states and 1813 transitions. [2021-12-22 13:07:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:07:14,009 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 [2021-12-22 13:07:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:14,013 INFO L225 Difference]: With dead ends: 977 [2021-12-22 13:07:14,013 INFO L226 Difference]: Without dead ends: 897 [2021-12-22 13:07:14,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:07:14,015 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:14,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:07:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-12-22 13:07:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-12-22 13:07:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.817877094972067) internal successors, (1627), 896 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1627 transitions. [2021-12-22 13:07:14,034 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1627 transitions. Word has length 46 [2021-12-22 13:07:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:14,034 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1627 transitions. [2021-12-22 13:07:14,034 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) [2021-12-22 13:07:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1627 transitions. [2021-12-22 13:07:14,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 13:07:14,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:14,036 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] [2021-12-22 13:07:14,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:07:14,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:14,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash 555727445, now seen corresponding path program 1 times [2021-12-22 13:07:14,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:14,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222558178] [2021-12-22 13:07:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:14,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:14,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:14,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222558178] [2021-12-22 13:07:14,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222558178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:14,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:14,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:14,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855092624] [2021-12-22 13:07:14,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:14,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:07:14,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:07:14,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:07:14,190 INFO L87 Difference]: Start difference. First operand 897 states and 1627 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:20,284 INFO L93 Difference]: Finished difference Result 3152 states and 5936 transitions. [2021-12-22 13:07:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:07:20,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-22 13:07:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:20,295 INFO L225 Difference]: With dead ends: 3152 [2021-12-22 13:07:20,295 INFO L226 Difference]: Without dead ends: 2399 [2021-12-22 13:07:20,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:07:20,298 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 2585 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:20,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2585 Valid, 881 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-12-22 13:07:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-12-22 13:07:20,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2399. [2021-12-22 13:07:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2397 states have (on average 1.5607008760951189) internal successors, (3741), 2398 states have internal predecessors, (3741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3741 transitions. [2021-12-22 13:07:20,346 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3741 transitions. Word has length 48 [2021-12-22 13:07:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:20,347 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3741 transitions. [2021-12-22 13:07:20,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3741 transitions. [2021-12-22 13:07:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:07:20,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:20,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:20,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:07:20,351 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2021-12-22 13:07:20,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:20,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70860606] [2021-12-22 13:07:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:20,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:20,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:20,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70860606] [2021-12-22 13:07:20,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70860606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:20,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:20,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:20,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105129394] [2021-12-22 13:07:20,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:20,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:20,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:20,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:20,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:20,522 INFO L87 Difference]: Start difference. First operand 2399 states and 3741 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:20,561 INFO L93 Difference]: Finished difference Result 2545 states and 3973 transitions. [2021-12-22 13:07:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:07:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:20,574 INFO L225 Difference]: With dead ends: 2545 [2021-12-22 13:07:20,574 INFO L226 Difference]: Without dead ends: 2469 [2021-12-22 13:07:20,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:20,584 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:20,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-12-22 13:07:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-12-22 13:07:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2465 states have (on average 1.561866125760649) internal successors, (3850), 2466 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3850 transitions. [2021-12-22 13:07:20,636 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3850 transitions. Word has length 106 [2021-12-22 13:07:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:20,637 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 3850 transitions. [2021-12-22 13:07:20,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3850 transitions. [2021-12-22 13:07:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:07:20,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:20,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:20,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:07:20,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2021-12-22 13:07:20,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:20,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16953985] [2021-12-22 13:07:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:20,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:20,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:20,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16953985] [2021-12-22 13:07:20,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16953985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:20,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:20,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:20,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261071159] [2021-12-22 13:07:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:20,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:20,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:20,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:20,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:20,818 INFO L87 Difference]: Start difference. First operand 2467 states and 3850 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:20,858 INFO L93 Difference]: Finished difference Result 2743 states and 4290 transitions. [2021-12-22 13:07:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:07:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:20,869 INFO L225 Difference]: With dead ends: 2743 [2021-12-22 13:07:20,870 INFO L226 Difference]: Without dead ends: 2599 [2021-12-22 13:07:20,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:20,872 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:20,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-12-22 13:07:20,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2597. [2021-12-22 13:07:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2595 states have (on average 1.5633911368015414) internal successors, (4057), 2596 states have internal predecessors, (4057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 4057 transitions. [2021-12-22 13:07:20,927 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 4057 transitions. Word has length 106 [2021-12-22 13:07:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:20,928 INFO L470 AbstractCegarLoop]: Abstraction has 2597 states and 4057 transitions. [2021-12-22 13:07:20,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 4057 transitions. [2021-12-22 13:07:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:07:20,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:20,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:20,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:07:20,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:20,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2021-12-22 13:07:20,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:20,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25772026] [2021-12-22 13:07:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:20,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:21,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25772026] [2021-12-22 13:07:21,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25772026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:21,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:21,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:21,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111561163] [2021-12-22 13:07:21,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:21,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:21,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:21,033 INFO L87 Difference]: Start difference. First operand 2597 states and 4057 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:21,081 INFO L93 Difference]: Finished difference Result 3121 states and 4891 transitions. [2021-12-22 13:07:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:21,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:07:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:21,096 INFO L225 Difference]: With dead ends: 3121 [2021-12-22 13:07:21,097 INFO L226 Difference]: Without dead ends: 2847 [2021-12-22 13:07:21,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:21,102 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:21,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-12-22 13:07:21,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2845. [2021-12-22 13:07:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2843 states have (on average 1.5648962363700316) internal successors, (4449), 2844 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4449 transitions. [2021-12-22 13:07:21,226 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4449 transitions. Word has length 106 [2021-12-22 13:07:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:21,228 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 4449 transitions. [2021-12-22 13:07:21,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:21,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4449 transitions. [2021-12-22 13:07:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:07:21,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:21,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:21,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:07:21,230 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:21,231 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2021-12-22 13:07:21,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:21,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181691494] [2021-12-22 13:07:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:21,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:21,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:21,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181691494] [2021-12-22 13:07:21,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181691494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:21,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:21,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:21,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994515670] [2021-12-22 13:07:21,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:21,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:21,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:21,329 INFO L87 Difference]: Start difference. First operand 2845 states and 4449 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:21,395 INFO L93 Difference]: Finished difference Result 3841 states and 6027 transitions. [2021-12-22 13:07:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:21,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:07:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:21,409 INFO L225 Difference]: With dead ends: 3841 [2021-12-22 13:07:21,410 INFO L226 Difference]: Without dead ends: 3319 [2021-12-22 13:07:21,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:21,413 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:21,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-12-22 13:07:21,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3317. [2021-12-22 13:07:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3315 states have (on average 1.5653092006033182) internal successors, (5189), 3316 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 5189 transitions. [2021-12-22 13:07:21,504 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 5189 transitions. Word has length 106 [2021-12-22 13:07:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:21,505 INFO L470 AbstractCegarLoop]: Abstraction has 3317 states and 5189 transitions. [2021-12-22 13:07:21,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 5189 transitions. [2021-12-22 13:07:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:07:21,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:21,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:21,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:07:21,507 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:21,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2021-12-22 13:07:21,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:21,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568100637] [2021-12-22 13:07:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:21,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:21,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:21,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568100637] [2021-12-22 13:07:21,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568100637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:21,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:21,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:07:21,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710009330] [2021-12-22 13:07:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:21,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:07:21,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:07:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:07:21,658 INFO L87 Difference]: Start difference. First operand 3317 states and 5189 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:22,911 INFO L93 Difference]: Finished difference Result 19221 states and 30293 transitions. [2021-12-22 13:07:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:07:22,911 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:07:22,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:22,992 INFO L225 Difference]: With dead ends: 19221 [2021-12-22 13:07:22,993 INFO L226 Difference]: Without dead ends: 18227 [2021-12-22 13:07:23,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:07:23,006 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:23,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:07:23,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18227 states. [2021-12-22 13:07:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18227 to 4309. [2021-12-22 13:07:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 4307 states have (on average 1.5614116554446251) internal successors, (6725), 4308 states have internal predecessors, (6725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 6725 transitions. [2021-12-22 13:07:23,399 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 6725 transitions. Word has length 106 [2021-12-22 13:07:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:23,399 INFO L470 AbstractCegarLoop]: Abstraction has 4309 states and 6725 transitions. [2021-12-22 13:07:23,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:23,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 6725 transitions. [2021-12-22 13:07:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:07:23,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:23,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:23,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:07:23,410 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:23,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2021-12-22 13:07:23,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:23,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273484640] [2021-12-22 13:07:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:23,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:23,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:23,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273484640] [2021-12-22 13:07:23,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273484640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:23,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:23,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:23,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4307920] [2021-12-22 13:07:23,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:23,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:23,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:23,483 INFO L87 Difference]: Start difference. First operand 4309 states and 6725 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:23,773 INFO L93 Difference]: Finished difference Result 7251 states and 11321 transitions. [2021-12-22 13:07:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 13:07:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:23,785 INFO L225 Difference]: With dead ends: 7251 [2021-12-22 13:07:23,785 INFO L226 Difference]: Without dead ends: 5265 [2021-12-22 13:07:23,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:23,791 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:23,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-12-22 13:07:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5263. [2021-12-22 13:07:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5261 states have (on average 1.5569283406196541) internal successors, (8191), 5262 states have internal predecessors, (8191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8191 transitions. [2021-12-22 13:07:24,110 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8191 transitions. Word has length 108 [2021-12-22 13:07:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:24,110 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 8191 transitions. [2021-12-22 13:07:24,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8191 transitions. [2021-12-22 13:07:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:07:24,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:24,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:24,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:07:24,113 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2021-12-22 13:07:24,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:24,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268920248] [2021-12-22 13:07:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:24,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:24,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:24,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268920248] [2021-12-22 13:07:24,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268920248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:24,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:24,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:07:24,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371845017] [2021-12-22 13:07:24,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:24,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:07:24,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:07:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:07:24,428 INFO L87 Difference]: Start difference. First operand 5263 states and 8191 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:25,120 INFO L93 Difference]: Finished difference Result 8203 states and 12761 transitions. [2021-12-22 13:07:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:07:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 13:07:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:25,131 INFO L225 Difference]: With dead ends: 8203 [2021-12-22 13:07:25,131 INFO L226 Difference]: Without dead ends: 5265 [2021-12-22 13:07:25,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:07:25,137 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 9658 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9658 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:25,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9658 Valid, 2490 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:07:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-12-22 13:07:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 5263. [2021-12-22 13:07:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5261 states have (on average 1.5523664702528037) internal successors, (8167), 5262 states have internal predecessors, (8167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8167 transitions. [2021-12-22 13:07:25,442 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8167 transitions. Word has length 108 [2021-12-22 13:07:25,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:25,442 INFO L470 AbstractCegarLoop]: Abstraction has 5263 states and 8167 transitions. [2021-12-22 13:07:25,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8167 transitions. [2021-12-22 13:07:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:07:25,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:25,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:25,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:07:25,445 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:25,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:25,445 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2021-12-22 13:07:25,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:25,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716797255] [2021-12-22 13:07:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:25,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:25,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:25,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716797255] [2021-12-22 13:07:25,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716797255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:25,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:25,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:25,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584116324] [2021-12-22 13:07:25,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:25,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:25,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:25,500 INFO L87 Difference]: Start difference. First operand 5263 states and 8167 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:25,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:25,971 INFO L93 Difference]: Finished difference Result 10851 states and 16777 transitions. [2021-12-22 13:07:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:25,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 13:07:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:25,986 INFO L225 Difference]: With dead ends: 10851 [2021-12-22 13:07:25,986 INFO L226 Difference]: Without dead ends: 7913 [2021-12-22 13:07:25,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:25,992 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:25,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2021-12-22 13:07:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7911. [2021-12-22 13:07:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7911 states, 7909 states have (on average 1.5403970160576559) internal successors, (12183), 7910 states have internal predecessors, (12183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 12183 transitions. [2021-12-22 13:07:26,538 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 12183 transitions. Word has length 108 [2021-12-22 13:07:26,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:26,539 INFO L470 AbstractCegarLoop]: Abstraction has 7911 states and 12183 transitions. [2021-12-22 13:07:26,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 12183 transitions. [2021-12-22 13:07:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:07:26,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:26,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:26,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 13:07:26,541 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:26,542 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2021-12-22 13:07:26,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:26,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823047946] [2021-12-22 13:07:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:26,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:26,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:26,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823047946] [2021-12-22 13:07:26,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823047946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:26,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:26,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:26,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83542908] [2021-12-22 13:07:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:26,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:26,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:26,600 INFO L87 Difference]: Start difference. First operand 7911 states and 12183 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:27,379 INFO L93 Difference]: Finished difference Result 18507 states and 28345 transitions. [2021-12-22 13:07:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 13:07:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:27,411 INFO L225 Difference]: With dead ends: 18507 [2021-12-22 13:07:27,411 INFO L226 Difference]: Without dead ends: 12921 [2021-12-22 13:07:27,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:27,424 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:27,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12921 states. [2021-12-22 13:07:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12921 to 12919. [2021-12-22 13:07:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12919 states, 12917 states have (on average 1.5241155066966015) internal successors, (19687), 12918 states have internal predecessors, (19687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:28,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12919 states to 12919 states and 19687 transitions. [2021-12-22 13:07:28,432 INFO L78 Accepts]: Start accepts. Automaton has 12919 states and 19687 transitions. Word has length 108 [2021-12-22 13:07:28,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:28,432 INFO L470 AbstractCegarLoop]: Abstraction has 12919 states and 19687 transitions. [2021-12-22 13:07:28,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 12919 states and 19687 transitions. [2021-12-22 13:07:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:07:28,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:28,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:28,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:07:28,434 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:28,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2021-12-22 13:07:28,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:28,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446656391] [2021-12-22 13:07:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:28,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:28,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:28,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446656391] [2021-12-22 13:07:28,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446656391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:28,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:28,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:28,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156819667] [2021-12-22 13:07:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:28,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:28,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:28,486 INFO L87 Difference]: Start difference. First operand 12919 states and 19687 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:30,080 INFO L93 Difference]: Finished difference Result 32955 states and 49897 transitions. [2021-12-22 13:07:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 13:07:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:30,128 INFO L225 Difference]: With dead ends: 32955 [2021-12-22 13:07:30,129 INFO L226 Difference]: Without dead ends: 22361 [2021-12-22 13:07:30,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:30,145 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:30,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22361 states. [2021-12-22 13:07:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22361 to 22359. [2021-12-22 13:07:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22359 states, 22357 states have (on average 1.5046294225522208) internal successors, (33639), 22358 states have internal predecessors, (33639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22359 states to 22359 states and 33639 transitions. [2021-12-22 13:07:31,961 INFO L78 Accepts]: Start accepts. Automaton has 22359 states and 33639 transitions. Word has length 108 [2021-12-22 13:07:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:31,962 INFO L470 AbstractCegarLoop]: Abstraction has 22359 states and 33639 transitions. [2021-12-22 13:07:31,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 22359 states and 33639 transitions. [2021-12-22 13:07:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:07:31,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:31,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:31,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 13:07:31,964 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2021-12-22 13:07:31,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:31,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457411964] [2021-12-22 13:07:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:31,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:32,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:32,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457411964] [2021-12-22 13:07:32,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457411964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:32,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:32,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:32,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585477105] [2021-12-22 13:07:32,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:32,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:07:32,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:32,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:07:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:32,014 INFO L87 Difference]: Start difference. First operand 22359 states and 33639 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:35,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:35,022 INFO L93 Difference]: Finished difference Result 60123 states and 89833 transitions. [2021-12-22 13:07:35,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:35,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 13:07:35,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:35,087 INFO L225 Difference]: With dead ends: 60123 [2021-12-22 13:07:35,088 INFO L226 Difference]: Without dead ends: 40089 [2021-12-22 13:07:35,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:07:35,120 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:35,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:35,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40089 states. [2021-12-22 13:07:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40089 to 40087. [2021-12-22 13:07:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40087 states, 40085 states have (on average 1.4826244231009105) internal successors, (59431), 40086 states have internal predecessors, (59431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40087 states to 40087 states and 59431 transitions. [2021-12-22 13:07:38,333 INFO L78 Accepts]: Start accepts. Automaton has 40087 states and 59431 transitions. Word has length 108 [2021-12-22 13:07:38,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:38,334 INFO L470 AbstractCegarLoop]: Abstraction has 40087 states and 59431 transitions. [2021-12-22 13:07:38,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:38,334 INFO L276 IsEmpty]: Start isEmpty. Operand 40087 states and 59431 transitions. [2021-12-22 13:07:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-22 13:07:38,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:38,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:38,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 13:07:38,335 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2021-12-22 13:07:38,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:38,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881577383] [2021-12-22 13:07:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:38,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:38,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:38,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881577383] [2021-12-22 13:07:38,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881577383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:38,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:38,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:07:38,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868818675] [2021-12-22 13:07:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:38,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:07:38,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:38,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:07:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:07:38,411 INFO L87 Difference]: Start difference. First operand 40087 states and 59431 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:44,087 INFO L93 Difference]: Finished difference Result 72254 states and 106008 transitions. [2021-12-22 13:07:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:07:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-22 13:07:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:44,215 INFO L225 Difference]: With dead ends: 72254 [2021-12-22 13:07:44,216 INFO L226 Difference]: Without dead ends: 72252 [2021-12-22 13:07:44,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:07:44,238 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:44,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72252 states. [2021-12-22 13:07:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72252 to 41623. [2021-12-22 13:07:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41623 states, 41621 states have (on average 1.4617380649191514) internal successors, (60839), 41622 states have internal predecessors, (60839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41623 states to 41623 states and 60839 transitions. [2021-12-22 13:07:48,262 INFO L78 Accepts]: Start accepts. Automaton has 41623 states and 60839 transitions. Word has length 109 [2021-12-22 13:07:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:48,263 INFO L470 AbstractCegarLoop]: Abstraction has 41623 states and 60839 transitions. [2021-12-22 13:07:48,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 41623 states and 60839 transitions. [2021-12-22 13:07:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-22 13:07:48,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:48,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:48,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 13:07:48,265 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash 529985117, now seen corresponding path program 1 times [2021-12-22 13:07:48,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:48,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607266847] [2021-12-22 13:07:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:48,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:07:48,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:48,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607266847] [2021-12-22 13:07:48,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607266847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:48,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:48,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:07:48,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681560651] [2021-12-22 13:07:48,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:48,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:07:48,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:07:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:07:48,363 INFO L87 Difference]: Start difference. First operand 41623 states and 60839 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:54,910 INFO L93 Difference]: Finished difference Result 45419 states and 67203 transitions. [2021-12-22 13:07:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:07:54,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-12-22 13:07:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:54,966 INFO L225 Difference]: With dead ends: 45419 [2021-12-22 13:07:54,966 INFO L226 Difference]: Without dead ends: 43127 [2021-12-22 13:07:54,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:07:54,983 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 894 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:54,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 1066 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-22 13:07:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43127 states. [2021-12-22 13:07:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43127 to 43125. [2021-12-22 13:07:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43125 states, 43123 states have (on average 1.4476497460751803) internal successors, (62427), 43124 states have internal predecessors, (62427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43125 states to 43125 states and 62427 transitions. [2021-12-22 13:07:58,515 INFO L78 Accepts]: Start accepts. Automaton has 43125 states and 62427 transitions. Word has length 119 [2021-12-22 13:07:58,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:58,515 INFO L470 AbstractCegarLoop]: Abstraction has 43125 states and 62427 transitions. [2021-12-22 13:07:58,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:58,515 INFO L276 IsEmpty]: Start isEmpty. Operand 43125 states and 62427 transitions. [2021-12-22 13:07:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 13:07:58,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:58,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:58,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 13:07:58,537 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2021-12-22 13:07:58,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:58,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165757152] [2021-12-22 13:07:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:58,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 13:07:58,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:58,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165757152] [2021-12-22 13:07:58,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165757152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:58,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:58,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:07:58,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918788905] [2021-12-22 13:07:58,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:58,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:07:58,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:07:58,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:07:58,668 INFO L87 Difference]: Start difference. First operand 43125 states and 62427 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)