./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.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 2164ea7ff9e119435a975a3ff24098e6247a3cb559bae891b283444f40f36a64 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 17:03:58,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 17:03:58,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 17:03:58,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 17:03:58,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 17:03:58,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 17:03:58,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 17:03:58,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 17:03:58,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 17:03:58,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 17:03:58,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 17:03:58,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 17:03:58,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 17:03:58,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 17:03:58,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 17:03:58,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 17:03:58,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 17:03:58,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 17:03:58,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 17:03:58,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 17:03:58,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 17:03:58,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 17:03:58,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 17:03:58,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 17:03:58,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 17:03:58,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 17:03:58,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 17:03:58,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 17:03:58,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 17:03:58,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 17:03:58,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 17:03:58,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 17:03:58,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 17:03:58,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 17:03:58,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 17:03:58,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 17:03:58,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 17:03:58,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 17:03:58,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 17:03:58,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 17:03:58,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 17:03:58,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 17:03:58,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 17:03:58,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 17:03:58,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 17:03:58,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 17:03:58,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 17:03:58,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 17:03:58,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 17:03:58,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 17:03:58,438 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 17:03:58,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 17:03:58,438 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 17:03:58,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 17:03:58,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 17:03:58,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 17:03:58,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 17:03:58,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 17:03:58,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 17:03:58,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 17:03:58,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 17:03:58,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 17:03:58,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 17:03:58,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 17:03:58,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 17:03:58,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 17:03:58,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 17:03:58,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 17:03:58,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 17:03:58,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 17:03:58,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 17:03:58,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 17:03:58,443 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 17:03:58,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 17:03:58,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 17:03:58,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 17:03:58,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2164ea7ff9e119435a975a3ff24098e6247a3cb559bae891b283444f40f36a64 [2021-12-17 17:03:58,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 17:03:58,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 17:03:58,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 17:03:58,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 17:03:58,670 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 17:03:58,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2021-12-17 17:03:58,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cde411ce/2a1d9765a53b4643add0d841c166ec95/FLAG4a04f80db [2021-12-17 17:03:59,117 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 17:03:59,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2021-12-17 17:03:59,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cde411ce/2a1d9765a53b4643add0d841c166ec95/FLAG4a04f80db [2021-12-17 17:03:59,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cde411ce/2a1d9765a53b4643add0d841c166ec95 [2021-12-17 17:03:59,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 17:03:59,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 17:03:59,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 17:03:59,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 17:03:59,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 17:03:59,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:03:59,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e3cd88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59, skipping insertion in model container [2021-12-17 17:03:59,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:03:59,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 17:03:59,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 17:03:59,747 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/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c[11829,11842] [2021-12-17 17:03:59,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 17:03:59,812 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 17:03:59,875 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/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c[11829,11842] [2021-12-17 17:03:59,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 17:03:59,916 INFO L208 MainTranslator]: Completed translation [2021-12-17 17:03:59,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59 WrapperNode [2021-12-17 17:03:59,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 17:03:59,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 17:03:59,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 17:03:59,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 17:03:59,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:03:59,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:03:59,966 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 962 [2021-12-17 17:03:59,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 17:03:59,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 17:03:59,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 17:03:59,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 17:03:59,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:03:59,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:04:00,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:04:00,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:04:00,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:04:00,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:04:00,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:04:00,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 17:04:00,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 17:04:00,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 17:04:00,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 17:04:00,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (1/1) ... [2021-12-17 17:04:00,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 17:04:00,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 17:04:00,060 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) [2021-12-17 17:04:00,083 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 [2021-12-17 17:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 17:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 17:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 17:04:00,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 17:04:00,190 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 17:04:00,191 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 17:04:00,829 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 17:04:00,835 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 17:04:00,835 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 17:04:00,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:04:00 BoogieIcfgContainer [2021-12-17 17:04:00,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 17:04:00,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 17:04:00,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 17:04:00,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 17:04:00,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:03:59" (1/3) ... [2021-12-17 17:04:00,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db6ba7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:04:00, skipping insertion in model container [2021-12-17 17:04:00,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:03:59" (2/3) ... [2021-12-17 17:04:00,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db6ba7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:04:00, skipping insertion in model container [2021-12-17 17:04:00,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:04:00" (3/3) ... [2021-12-17 17:04:00,843 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2021-12-17 17:04:00,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 17:04:00,848 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 17:04:00,896 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 17:04:00,903 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 [2021-12-17 17:04:00,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 17:04:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 230 states have (on average 1.7695652173913043) internal successors, (407), 231 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-17 17:04:00,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:00,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:00,940 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1788351764, now seen corresponding path program 1 times [2021-12-17 17:04:00,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:00,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046688623] [2021-12-17 17:04:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:00,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:01,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:01,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046688623] [2021-12-17 17:04:01,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046688623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:01,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:01,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:01,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140887819] [2021-12-17 17:04:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:01,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:01,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:01,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:01,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:01,437 INFO L87 Difference]: Start difference. First operand has 232 states, 230 states have (on average 1.7695652173913043) internal successors, (407), 231 states have internal predecessors, (407), 0 states have call successors, (0), 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 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:02,004 INFO L93 Difference]: Finished difference Result 1848 states and 2971 transitions. [2021-12-17 17:04:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 17:04:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-12-17 17:04:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:02,026 INFO L225 Difference]: With dead ends: 1848 [2021-12-17 17:04:02,027 INFO L226 Difference]: Without dead ends: 1706 [2021-12-17 17:04:02,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-17 17:04:02,037 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 3832 mSDsluCounter, 7254 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3832 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:02,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3832 Valid, 8258 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 17:04:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2021-12-17 17:04:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 349. [2021-12-17 17:04:02,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4396551724137931) internal successors, (501), 348 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 501 transitions. [2021-12-17 17:04:02,116 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 501 transitions. Word has length 125 [2021-12-17 17:04:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:02,117 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 501 transitions. [2021-12-17 17:04:02,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 501 transitions. [2021-12-17 17:04:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:02,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:02,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:02,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 17:04:02,119 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash 649831019, now seen corresponding path program 1 times [2021-12-17 17:04:02,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:02,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197490557] [2021-12-17 17:04:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:02,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:02,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:02,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197490557] [2021-12-17 17:04:02,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197490557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:02,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:02,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:02,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282861350] [2021-12-17 17:04:02,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:02,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:02,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:02,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:02,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:02,366 INFO L87 Difference]: Start difference. First operand 349 states and 501 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:02,738 INFO L93 Difference]: Finished difference Result 1961 states and 3049 transitions. [2021-12-17 17:04:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:02,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:02,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:02,745 INFO L225 Difference]: With dead ends: 1961 [2021-12-17 17:04:02,746 INFO L226 Difference]: Without dead ends: 1781 [2021-12-17 17:04:02,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:04:02,749 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 2719 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 4028 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:02,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2719 Valid, 4028 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:04:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-12-17 17:04:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 553. [2021-12-17 17:04:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.4945652173913044) internal successors, (825), 552 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 825 transitions. [2021-12-17 17:04:02,782 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 825 transitions. Word has length 127 [2021-12-17 17:04:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:02,782 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 825 transitions. [2021-12-17 17:04:02,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 825 transitions. [2021-12-17 17:04:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:02,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:02,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:02,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 17:04:02,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash -660885545, now seen corresponding path program 1 times [2021-12-17 17:04:02,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:02,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735729477] [2021-12-17 17:04:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:02,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:02,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:02,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735729477] [2021-12-17 17:04:02,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735729477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:02,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:02,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:02,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824826723] [2021-12-17 17:04:02,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:02,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:02,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:02,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:02,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:02,904 INFO L87 Difference]: Start difference. First operand 553 states and 825 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:03,288 INFO L93 Difference]: Finished difference Result 2165 states and 3373 transitions. [2021-12-17 17:04:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:03,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:03,296 INFO L225 Difference]: With dead ends: 2165 [2021-12-17 17:04:03,296 INFO L226 Difference]: Without dead ends: 1985 [2021-12-17 17:04:03,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:04:03,302 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 2883 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:03,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2883 Valid, 3873 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:04:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2021-12-17 17:04:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 841. [2021-12-17 17:04:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.526190476190476) internal successors, (1282), 840 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1282 transitions. [2021-12-17 17:04:03,348 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1282 transitions. Word has length 127 [2021-12-17 17:04:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:03,349 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1282 transitions. [2021-12-17 17:04:03,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:03,349 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1282 transitions. [2021-12-17 17:04:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:03,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:03,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:03,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 17:04:03,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -356396037, now seen corresponding path program 1 times [2021-12-17 17:04:03,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:03,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898252784] [2021-12-17 17:04:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:03,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:03,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:03,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898252784] [2021-12-17 17:04:03,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898252784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:03,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:03,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:03,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96767320] [2021-12-17 17:04:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:03,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:03,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:03,466 INFO L87 Difference]: Start difference. First operand 841 states and 1282 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:03,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:03,796 INFO L93 Difference]: Finished difference Result 2359 states and 3681 transitions. [2021-12-17 17:04:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:03,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:03,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:03,802 INFO L225 Difference]: With dead ends: 2359 [2021-12-17 17:04:03,803 INFO L226 Difference]: Without dead ends: 2179 [2021-12-17 17:04:03,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:04:03,804 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 3476 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:03,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3476 Valid, 3301 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:04:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2021-12-17 17:04:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 1035. [2021-12-17 17:04:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.5377176015473888) internal successors, (1590), 1034 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1590 transitions. [2021-12-17 17:04:03,855 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1590 transitions. Word has length 127 [2021-12-17 17:04:03,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:03,856 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1590 transitions. [2021-12-17 17:04:03,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1590 transitions. [2021-12-17 17:04:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:03,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:03,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:03,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 17:04:03,858 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash 995442863, now seen corresponding path program 1 times [2021-12-17 17:04:03,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:03,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420756612] [2021-12-17 17:04:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:03,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:03,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:03,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420756612] [2021-12-17 17:04:03,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420756612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:03,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:03,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:03,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181659971] [2021-12-17 17:04:03,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:03,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:03,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:03,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:03,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:03,974 INFO L87 Difference]: Start difference. First operand 1035 states and 1590 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:04,312 INFO L93 Difference]: Finished difference Result 2548 states and 3981 transitions. [2021-12-17 17:04:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:04,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:04,319 INFO L225 Difference]: With dead ends: 2548 [2021-12-17 17:04:04,319 INFO L226 Difference]: Without dead ends: 2368 [2021-12-17 17:04:04,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:04:04,321 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 3802 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3802 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:04,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3802 Valid, 3157 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2021-12-17 17:04:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1214. [2021-12-17 17:04:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 1.5449299258037923) internal successors, (1874), 1213 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1874 transitions. [2021-12-17 17:04:04,385 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1874 transitions. Word has length 127 [2021-12-17 17:04:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:04,386 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1874 transitions. [2021-12-17 17:04:04,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1874 transitions. [2021-12-17 17:04:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:04,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:04,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:04,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 17:04:04,388 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:04,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1485273227, now seen corresponding path program 1 times [2021-12-17 17:04:04,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:04,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849307686] [2021-12-17 17:04:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:04,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:04,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:04,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849307686] [2021-12-17 17:04:04,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849307686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:04,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:04,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:04,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562039608] [2021-12-17 17:04:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:04,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:04,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:04,518 INFO L87 Difference]: Start difference. First operand 1214 states and 1874 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:04,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:04,838 INFO L93 Difference]: Finished difference Result 2726 states and 4264 transitions. [2021-12-17 17:04:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:04,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:04,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:04,845 INFO L225 Difference]: With dead ends: 2726 [2021-12-17 17:04:04,846 INFO L226 Difference]: Without dead ends: 2546 [2021-12-17 17:04:04,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:04:04,849 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 3939 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:04,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3939 Valid, 3153 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-12-17 17:04:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1392. [2021-12-17 17:04:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 1.5506829618979152) internal successors, (2157), 1391 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2157 transitions. [2021-12-17 17:04:04,924 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2157 transitions. Word has length 127 [2021-12-17 17:04:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:04,924 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 2157 transitions. [2021-12-17 17:04:04,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2157 transitions. [2021-12-17 17:04:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:04,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:04,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:04,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 17:04:04,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash 808098494, now seen corresponding path program 1 times [2021-12-17 17:04:04,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:04,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307458305] [2021-12-17 17:04:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:04,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:05,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:05,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307458305] [2021-12-17 17:04:05,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307458305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:05,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:05,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:05,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755672279] [2021-12-17 17:04:05,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:05,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:05,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:05,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:05,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:05,163 INFO L87 Difference]: Start difference. First operand 1392 states and 2157 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:05,554 INFO L93 Difference]: Finished difference Result 2553 states and 3999 transitions. [2021-12-17 17:04:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:05,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:05,558 INFO L225 Difference]: With dead ends: 2553 [2021-12-17 17:04:05,558 INFO L226 Difference]: Without dead ends: 1394 [2021-12-17 17:04:05,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-17 17:04:05,563 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 2081 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:05,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2081 Valid, 1590 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-12-17 17:04:05,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1392. [2021-12-17 17:04:05,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 1.5456506110711719) internal successors, (2150), 1391 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2150 transitions. [2021-12-17 17:04:05,654 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2150 transitions. Word has length 127 [2021-12-17 17:04:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:05,655 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 2150 transitions. [2021-12-17 17:04:05,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2150 transitions. [2021-12-17 17:04:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:05,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:05,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:05,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 17:04:05,656 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash 528748287, now seen corresponding path program 1 times [2021-12-17 17:04:05,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:05,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063370404] [2021-12-17 17:04:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:05,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:05,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:05,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063370404] [2021-12-17 17:04:05,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063370404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:05,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:05,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:04:05,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061706858] [2021-12-17 17:04:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:05,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:04:05,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:04:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:04:05,719 INFO L87 Difference]: Start difference. First operand 1392 states and 2150 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:05,861 INFO L93 Difference]: Finished difference Result 3626 states and 5677 transitions. [2021-12-17 17:04:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:04:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:05,869 INFO L225 Difference]: With dead ends: 3626 [2021-12-17 17:04:05,870 INFO L226 Difference]: Without dead ends: 2467 [2021-12-17 17:04:05,872 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 [2021-12-17 17:04:05,872 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 131 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:05,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 736 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:04:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2021-12-17 17:04:06,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2465. [2021-12-17 17:04:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2464 states have (on average 1.5487012987012987) internal successors, (3816), 2464 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3816 transitions. [2021-12-17 17:04:06,027 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3816 transitions. Word has length 127 [2021-12-17 17:04:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:06,028 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 3816 transitions. [2021-12-17 17:04:06,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3816 transitions. [2021-12-17 17:04:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:06,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:06,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:06,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 17:04:06,031 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:06,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:06,031 INFO L85 PathProgramCache]: Analyzing trace with hash -19934321, now seen corresponding path program 1 times [2021-12-17 17:04:06,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:06,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39945714] [2021-12-17 17:04:06,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:06,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:06,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:06,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39945714] [2021-12-17 17:04:06,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39945714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:06,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:06,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:06,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014633413] [2021-12-17 17:04:06,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:06,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:06,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:06,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:06,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:06,128 INFO L87 Difference]: Start difference. First operand 2465 states and 3816 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:06,589 INFO L93 Difference]: Finished difference Result 5298 states and 8255 transitions. [2021-12-17 17:04:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:06,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:06,603 INFO L225 Difference]: With dead ends: 5298 [2021-12-17 17:04:06,603 INFO L226 Difference]: Without dead ends: 4953 [2021-12-17 17:04:06,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:04:06,605 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 2944 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2944 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:06,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2944 Valid, 3509 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2021-12-17 17:04:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 2814. [2021-12-17 17:04:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.5510131532172058) internal successors, (4363), 2813 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:06,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4363 transitions. [2021-12-17 17:04:06,775 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4363 transitions. Word has length 127 [2021-12-17 17:04:06,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:06,775 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 4363 transitions. [2021-12-17 17:04:06,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:06,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4363 transitions. [2021-12-17 17:04:06,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:06,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:06,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:06,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 17:04:06,777 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:06,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:06,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2122526909, now seen corresponding path program 1 times [2021-12-17 17:04:06,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:06,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904943398] [2021-12-17 17:04:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:06,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:06,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:06,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904943398] [2021-12-17 17:04:06,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904943398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:06,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:06,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:06,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416048710] [2021-12-17 17:04:06,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:06,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:06,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:06,875 INFO L87 Difference]: Start difference. First operand 2814 states and 4363 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:07,390 INFO L93 Difference]: Finished difference Result 5647 states and 8802 transitions. [2021-12-17 17:04:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:07,391 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:07,405 INFO L225 Difference]: With dead ends: 5647 [2021-12-17 17:04:07,405 INFO L226 Difference]: Without dead ends: 5302 [2021-12-17 17:04:07,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:04:07,407 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 3044 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:07,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3044 Valid, 4410 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:04:07,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2021-12-17 17:04:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3168. [2021-12-17 17:04:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3167 states have (on average 1.552889169561099) internal successors, (4918), 3167 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:07,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4918 transitions. [2021-12-17 17:04:07,608 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4918 transitions. Word has length 127 [2021-12-17 17:04:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:07,609 INFO L470 AbstractCegarLoop]: Abstraction has 3168 states and 4918 transitions. [2021-12-17 17:04:07,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:07,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4918 transitions. [2021-12-17 17:04:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 17:04:07,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:07,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:07,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 17:04:07,610 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1885363609, now seen corresponding path program 1 times [2021-12-17 17:04:07,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:07,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796738954] [2021-12-17 17:04:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:07,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:07,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:07,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796738954] [2021-12-17 17:04:07,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796738954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:07,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:07,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 17:04:07,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985764562] [2021-12-17 17:04:07,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:07,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:04:07,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:07,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:04:07,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:04:07,717 INFO L87 Difference]: Start difference. First operand 3168 states and 4918 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:08,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:08,332 INFO L93 Difference]: Finished difference Result 6011 states and 9373 transitions. [2021-12-17 17:04:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:04:08,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-17 17:04:08,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:08,340 INFO L225 Difference]: With dead ends: 6011 [2021-12-17 17:04:08,341 INFO L226 Difference]: Without dead ends: 5666 [2021-12-17 17:04:08,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:04:08,343 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 3378 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3378 SdHoareTripleChecker+Valid, 4615 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:08,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3378 Valid, 4615 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:04:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5666 states. [2021-12-17 17:04:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5666 to 3537. [2021-12-17 17:04:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3536 states have (on average 1.554581447963801) internal successors, (5497), 3536 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5497 transitions. [2021-12-17 17:04:08,599 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5497 transitions. Word has length 127 [2021-12-17 17:04:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:08,599 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 5497 transitions. [2021-12-17 17:04:08,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5497 transitions. [2021-12-17 17:04:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-17 17:04:08,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:08,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:08,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 17:04:08,602 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash -720659575, now seen corresponding path program 1 times [2021-12-17 17:04:08,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:08,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110737175] [2021-12-17 17:04:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:08,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:08,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110737175] [2021-12-17 17:04:08,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110737175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:08,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:08,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:04:08,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806337478] [2021-12-17 17:04:08,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:08,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:08,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:08,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:08,669 INFO L87 Difference]: Start difference. First operand 3537 states and 5497 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:09,046 INFO L93 Difference]: Finished difference Result 6994 states and 10910 transitions. [2021-12-17 17:04:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:04:09,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-12-17 17:04:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:09,054 INFO L225 Difference]: With dead ends: 6994 [2021-12-17 17:04:09,054 INFO L226 Difference]: Without dead ends: 3537 [2021-12-17 17:04:09,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 17:04:09,060 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 814 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:09,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 196 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-12-17 17:04:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3537. [2021-12-17 17:04:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3536 states have (on average 1.543552036199095) internal successors, (5458), 3536 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5458 transitions. [2021-12-17 17:04:09,390 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5458 transitions. Word has length 128 [2021-12-17 17:04:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:09,390 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 5458 transitions. [2021-12-17 17:04:09,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5458 transitions. [2021-12-17 17:04:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-17 17:04:09,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:09,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:09,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 17:04:09,393 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2049645065, now seen corresponding path program 1 times [2021-12-17 17:04:09,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:09,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865218308] [2021-12-17 17:04:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:09,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:09,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:09,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865218308] [2021-12-17 17:04:09,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865218308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:09,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:09,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:04:09,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095410313] [2021-12-17 17:04:09,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:09,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:09,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:09,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:09,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:09,457 INFO L87 Difference]: Start difference. First operand 3537 states and 5458 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 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) [2021-12-17 17:04:09,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:09,862 INFO L93 Difference]: Finished difference Result 6986 states and 10823 transitions. [2021-12-17 17:04:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:04:09,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 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) Word has length 129 [2021-12-17 17:04:09,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:09,868 INFO L225 Difference]: With dead ends: 6986 [2021-12-17 17:04:09,869 INFO L226 Difference]: Without dead ends: 3537 [2021-12-17 17:04:09,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 17:04:09,874 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 785 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:09,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 212 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-12-17 17:04:10,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3537. [2021-12-17 17:04:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3536 states have (on average 1.5325226244343892) internal successors, (5419), 3536 states have internal predecessors, (5419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5419 transitions. [2021-12-17 17:04:10,167 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5419 transitions. Word has length 129 [2021-12-17 17:04:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:10,167 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 5419 transitions. [2021-12-17 17:04:10,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 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) [2021-12-17 17:04:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5419 transitions. [2021-12-17 17:04:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-17 17:04:10,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:10,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:10,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 17:04:10,170 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1316546679, now seen corresponding path program 1 times [2021-12-17 17:04:10,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:10,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326239560] [2021-12-17 17:04:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:10,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:10,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:10,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326239560] [2021-12-17 17:04:10,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326239560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:10,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:10,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:04:10,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051692617] [2021-12-17 17:04:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:10,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:10,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:10,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:10,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:10,235 INFO L87 Difference]: Start difference. First operand 3537 states and 5419 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:10,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:10,625 INFO L93 Difference]: Finished difference Result 7002 states and 10764 transitions. [2021-12-17 17:04:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:04:10,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-12-17 17:04:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:10,631 INFO L225 Difference]: With dead ends: 7002 [2021-12-17 17:04:10,631 INFO L226 Difference]: Without dead ends: 3537 [2021-12-17 17:04:10,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 17:04:10,636 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 824 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:10,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 180 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-12-17 17:04:10,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3537. [2021-12-17 17:04:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3536 states have (on average 1.5214932126696832) internal successors, (5380), 3536 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5380 transitions. [2021-12-17 17:04:10,885 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5380 transitions. Word has length 130 [2021-12-17 17:04:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:10,885 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 5380 transitions. [2021-12-17 17:04:10,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5380 transitions. [2021-12-17 17:04:10,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-17 17:04:10,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:10,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:10,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 17:04:10,887 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1625401865, now seen corresponding path program 1 times [2021-12-17 17:04:10,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:10,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870971781] [2021-12-17 17:04:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:10,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:10,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:10,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870971781] [2021-12-17 17:04:10,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870971781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:10,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:10,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:04:10,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975291695] [2021-12-17 17:04:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:10,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:10,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:10,930 INFO L87 Difference]: Start difference. First operand 3537 states and 5380 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:11,742 INFO L93 Difference]: Finished difference Result 10400 states and 15899 transitions. [2021-12-17 17:04:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:04:11,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-12-17 17:04:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:11,753 INFO L225 Difference]: With dead ends: 10400 [2021-12-17 17:04:11,754 INFO L226 Difference]: Without dead ends: 6931 [2021-12-17 17:04:11,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 17:04:11,762 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1203 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:11,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1203 Valid, 272 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:04:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2021-12-17 17:04:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 6929. [2021-12-17 17:04:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6929 states, 6928 states have (on average 1.5225173210161662) internal successors, (10548), 6928 states have internal predecessors, (10548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 10548 transitions. [2021-12-17 17:04:12,320 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 10548 transitions. Word has length 131 [2021-12-17 17:04:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:12,320 INFO L470 AbstractCegarLoop]: Abstraction has 6929 states and 10548 transitions. [2021-12-17 17:04:12,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 10548 transitions. [2021-12-17 17:04:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-17 17:04:12,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:12,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:12,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 17:04:12,323 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:12,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash 875898365, now seen corresponding path program 1 times [2021-12-17 17:04:12,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:12,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668340058] [2021-12-17 17:04:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:12,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:12,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:12,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668340058] [2021-12-17 17:04:12,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668340058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:12,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:12,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:04:12,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280693110] [2021-12-17 17:04:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:12,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:12,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:12,369 INFO L87 Difference]: Start difference. First operand 6929 states and 10548 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:12,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:12,962 INFO L93 Difference]: Finished difference Result 13762 states and 20996 transitions. [2021-12-17 17:04:12,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:04:12,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-12-17 17:04:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:12,970 INFO L225 Difference]: With dead ends: 13762 [2021-12-17 17:04:12,970 INFO L226 Difference]: Without dead ends: 6929 [2021-12-17 17:04:12,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 17:04:12,977 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 748 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:12,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 232 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6929 states. [2021-12-17 17:04:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6929 to 6929. [2021-12-17 17:04:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6929 states, 6928 states have (on average 1.511403002309469) internal successors, (10471), 6928 states have internal predecessors, (10471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:13,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 10471 transitions. [2021-12-17 17:04:13,479 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 10471 transitions. Word has length 132 [2021-12-17 17:04:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:13,480 INFO L470 AbstractCegarLoop]: Abstraction has 6929 states and 10471 transitions. [2021-12-17 17:04:13,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 10471 transitions. [2021-12-17 17:04:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-17 17:04:13,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:13,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:13,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 17:04:13,482 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:13,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1491310101, now seen corresponding path program 1 times [2021-12-17 17:04:13,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:13,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808310901] [2021-12-17 17:04:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:13,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:13,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:13,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808310901] [2021-12-17 17:04:13,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808310901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:13,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:13,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:04:13,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84448722] [2021-12-17 17:04:13,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:13,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:13,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:13,554 INFO L87 Difference]: Start difference. First operand 6929 states and 10471 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:14,299 INFO L93 Difference]: Finished difference Result 13766 states and 20847 transitions. [2021-12-17 17:04:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:04:14,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-12-17 17:04:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:14,309 INFO L225 Difference]: With dead ends: 13766 [2021-12-17 17:04:14,309 INFO L226 Difference]: Without dead ends: 6929 [2021-12-17 17:04:14,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 17:04:14,319 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 750 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:14,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 220 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6929 states. [2021-12-17 17:04:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6929 to 6929. [2021-12-17 17:04:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6929 states, 6928 states have (on average 1.5002886836027713) internal successors, (10394), 6928 states have internal predecessors, (10394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 10394 transitions. [2021-12-17 17:04:14,971 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 10394 transitions. Word has length 133 [2021-12-17 17:04:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:14,972 INFO L470 AbstractCegarLoop]: Abstraction has 6929 states and 10394 transitions. [2021-12-17 17:04:14,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 10394 transitions. [2021-12-17 17:04:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 17:04:14,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:14,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:14,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 17:04:14,976 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1029772175, now seen corresponding path program 1 times [2021-12-17 17:04:14,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:14,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922779052] [2021-12-17 17:04:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:14,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:15,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:15,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922779052] [2021-12-17 17:04:15,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922779052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:15,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:15,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:04:15,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983123736] [2021-12-17 17:04:15,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:15,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:15,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:15,069 INFO L87 Difference]: Start difference. First operand 6929 states and 10394 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:15,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:15,720 INFO L93 Difference]: Finished difference Result 13782 states and 20711 transitions. [2021-12-17 17:04:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:04:15,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-12-17 17:04:15,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:15,730 INFO L225 Difference]: With dead ends: 13782 [2021-12-17 17:04:15,730 INFO L226 Difference]: Without dead ends: 6929 [2021-12-17 17:04:15,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 17:04:15,739 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 790 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:15,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 188 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6929 states. [2021-12-17 17:04:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6929 to 6929. [2021-12-17 17:04:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6929 states, 6928 states have (on average 1.4891743648960738) internal successors, (10317), 6928 states have internal predecessors, (10317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 10317 transitions. [2021-12-17 17:04:16,291 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 10317 transitions. Word has length 134 [2021-12-17 17:04:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:16,291 INFO L470 AbstractCegarLoop]: Abstraction has 6929 states and 10317 transitions. [2021-12-17 17:04:16,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:16,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 10317 transitions. [2021-12-17 17:04:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 17:04:16,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:16,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:16,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 17:04:16,294 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:16,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1462960491, now seen corresponding path program 1 times [2021-12-17 17:04:16,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:16,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197729324] [2021-12-17 17:04:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:16,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:16,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:16,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197729324] [2021-12-17 17:04:16,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197729324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:16,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:16,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:04:16,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612177993] [2021-12-17 17:04:16,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:16,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:16,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:16,349 INFO L87 Difference]: Start difference. First operand 6929 states and 10317 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:17,084 INFO L93 Difference]: Finished difference Result 13774 states and 20549 transitions. [2021-12-17 17:04:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 17:04:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-12-17 17:04:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:17,092 INFO L225 Difference]: With dead ends: 13774 [2021-12-17 17:04:17,092 INFO L226 Difference]: Without dead ends: 6929 [2021-12-17 17:04:17,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 17:04:17,097 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 760 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:17,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 204 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 17:04:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6929 states. [2021-12-17 17:04:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6929 to 6929. [2021-12-17 17:04:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6929 states, 6928 states have (on average 1.4780600461893765) internal successors, (10240), 6928 states have internal predecessors, (10240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 10240 transitions. [2021-12-17 17:04:17,617 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 10240 transitions. Word has length 135 [2021-12-17 17:04:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:17,618 INFO L470 AbstractCegarLoop]: Abstraction has 6929 states and 10240 transitions. [2021-12-17 17:04:17,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:17,618 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 10240 transitions. [2021-12-17 17:04:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-17 17:04:17,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:17,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:17,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 17:04:17,620 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:17,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:17,620 INFO L85 PathProgramCache]: Analyzing trace with hash -939512999, now seen corresponding path program 1 times [2021-12-17 17:04:17,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:17,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696987495] [2021-12-17 17:04:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:17,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:17,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:17,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696987495] [2021-12-17 17:04:17,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696987495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:17,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:17,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 17:04:17,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281361959] [2021-12-17 17:04:17,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:17,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 17:04:17,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:17,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 17:04:17,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 17:04:17,687 INFO L87 Difference]: Start difference. First operand 6929 states and 10240 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:18,956 INFO L93 Difference]: Finished difference Result 11599 states and 17144 transitions. [2021-12-17 17:04:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 17:04:18,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2021-12-17 17:04:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:18,974 INFO L225 Difference]: With dead ends: 11599 [2021-12-17 17:04:18,974 INFO L226 Difference]: Without dead ends: 11597 [2021-12-17 17:04:18,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 17:04:18,979 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 258 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:18,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1215 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:04:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11597 states. [2021-12-17 17:04:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11597 to 6965. [2021-12-17 17:04:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6965 states, 6964 states have (on average 1.4727168294083859) internal successors, (10256), 6964 states have internal predecessors, (10256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 10256 transitions. [2021-12-17 17:04:19,632 INFO L78 Accepts]: Start accepts. Automaton has 6965 states and 10256 transitions. Word has length 136 [2021-12-17 17:04:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:19,633 INFO L470 AbstractCegarLoop]: Abstraction has 6965 states and 10256 transitions. [2021-12-17 17:04:19,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6965 states and 10256 transitions. [2021-12-17 17:04:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-17 17:04:19,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:19,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:19,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 17:04:19,635 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash -738604843, now seen corresponding path program 1 times [2021-12-17 17:04:19,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895442602] [2021-12-17 17:04:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:19,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:19,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:19,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895442602] [2021-12-17 17:04:19,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895442602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:19,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:19,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 17:04:19,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225108981] [2021-12-17 17:04:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:19,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:04:19,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:04:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:04:19,831 INFO L87 Difference]: Start difference. First operand 6965 states and 10256 transitions. Second operand has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:22,936 INFO L93 Difference]: Finished difference Result 32548 states and 47643 transitions. [2021-12-17 17:04:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 17:04:22,936 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2021-12-17 17:04:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:22,969 INFO L225 Difference]: With dead ends: 32548 [2021-12-17 17:04:22,970 INFO L226 Difference]: Without dead ends: 25992 [2021-12-17 17:04:22,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2021-12-17 17:04:22,979 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 2181 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:22,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2181 Valid, 917 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 17:04:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25992 states. [2021-12-17 17:04:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25992 to 7016. [2021-12-17 17:04:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 1.471703492516037) internal successors, (10324), 7015 states have internal predecessors, (10324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10324 transitions. [2021-12-17 17:04:23,729 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10324 transitions. Word has length 136 [2021-12-17 17:04:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:23,730 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 10324 transitions. [2021-12-17 17:04:23,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10324 transitions. [2021-12-17 17:04:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-17 17:04:23,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:23,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:23,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 17:04:23,732 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1418429756, now seen corresponding path program 1 times [2021-12-17 17:04:23,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:23,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84919014] [2021-12-17 17:04:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:23,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:23,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:23,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84919014] [2021-12-17 17:04:23,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84919014] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:23,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:23,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 17:04:23,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089671159] [2021-12-17 17:04:23,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:23,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 17:04:23,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 17:04:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-17 17:04:23,928 INFO L87 Difference]: Start difference. First operand 7016 states and 10324 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:27,979 INFO L93 Difference]: Finished difference Result 34669 states and 50752 transitions. [2021-12-17 17:04:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 17:04:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-12-17 17:04:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:28,023 INFO L225 Difference]: With dead ends: 34669 [2021-12-17 17:04:28,023 INFO L226 Difference]: Without dead ends: 28006 [2021-12-17 17:04:28,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-12-17 17:04:28,038 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 3362 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3362 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:28,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3362 Valid, 874 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 17:04:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28006 states. [2021-12-17 17:04:29,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28006 to 7139. [2021-12-17 17:04:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7139 states, 7138 states have (on average 1.4711403754553096) internal successors, (10501), 7138 states have internal predecessors, (10501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7139 states to 7139 states and 10501 transitions. [2021-12-17 17:04:29,155 INFO L78 Accepts]: Start accepts. Automaton has 7139 states and 10501 transitions. Word has length 137 [2021-12-17 17:04:29,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:29,155 INFO L470 AbstractCegarLoop]: Abstraction has 7139 states and 10501 transitions. [2021-12-17 17:04:29,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 7139 states and 10501 transitions. [2021-12-17 17:04:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-17 17:04:29,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:29,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:29,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 17:04:29,157 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:29,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2019032416, now seen corresponding path program 1 times [2021-12-17 17:04:29,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:29,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342013760] [2021-12-17 17:04:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:29,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:29,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:29,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:29,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342013760] [2021-12-17 17:04:29,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342013760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:29,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:29,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 17:04:29,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977788856] [2021-12-17 17:04:29,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:29,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:04:29,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:04:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:04:29,330 INFO L87 Difference]: Start difference. First operand 7139 states and 10501 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:31,133 INFO L93 Difference]: Finished difference Result 17430 states and 25607 transitions. [2021-12-17 17:04:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 17:04:31,134 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-12-17 17:04:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:31,146 INFO L225 Difference]: With dead ends: 17430 [2021-12-17 17:04:31,146 INFO L226 Difference]: Without dead ends: 10604 [2021-12-17 17:04:31,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:04:31,153 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 2169 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:31,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 787 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 17:04:31,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10604 states. [2021-12-17 17:04:31,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10604 to 7016. [2021-12-17 17:04:31,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 1.4712758374910906) internal successors, (10321), 7015 states have internal predecessors, (10321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10321 transitions. [2021-12-17 17:04:31,991 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10321 transitions. Word has length 137 [2021-12-17 17:04:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:31,992 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 10321 transitions. [2021-12-17 17:04:31,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10321 transitions. [2021-12-17 17:04:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-17 17:04:31,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:31,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:31,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 17:04:31,994 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:31,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:31,994 INFO L85 PathProgramCache]: Analyzing trace with hash 342849080, now seen corresponding path program 1 times [2021-12-17 17:04:31,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:31,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582962470] [2021-12-17 17:04:31,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:31,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:32,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:32,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582962470] [2021-12-17 17:04:32,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582962470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:32,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:32,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 17:04:32,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068840554] [2021-12-17 17:04:32,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:32,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:04:32,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:04:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:04:32,163 INFO L87 Difference]: Start difference. First operand 7016 states and 10321 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:34,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:34,321 INFO L93 Difference]: Finished difference Result 20585 states and 30265 transitions. [2021-12-17 17:04:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 17:04:34,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-12-17 17:04:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:34,338 INFO L225 Difference]: With dead ends: 20585 [2021-12-17 17:04:34,338 INFO L226 Difference]: Without dead ends: 13904 [2021-12-17 17:04:34,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:04:34,345 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 2076 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:34,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2076 Valid, 695 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 17:04:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13904 states. [2021-12-17 17:04:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13904 to 7016. [2021-12-17 17:04:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 1.469422665716322) internal successors, (10308), 7015 states have internal predecessors, (10308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10308 transitions. [2021-12-17 17:04:35,220 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10308 transitions. Word has length 137 [2021-12-17 17:04:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:35,220 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 10308 transitions. [2021-12-17 17:04:35,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:35,221 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10308 transitions. [2021-12-17 17:04:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-17 17:04:35,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:35,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:35,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 17:04:35,222 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1008519847, now seen corresponding path program 1 times [2021-12-17 17:04:35,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:35,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697604001] [2021-12-17 17:04:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:35,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:35,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:35,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697604001] [2021-12-17 17:04:35,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697604001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:35,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:35,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 17:04:35,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257489394] [2021-12-17 17:04:35,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:35,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:04:35,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:35,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:04:35,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:04:35,382 INFO L87 Difference]: Start difference. First operand 7016 states and 10308 transitions. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:37,904 INFO L93 Difference]: Finished difference Result 20685 states and 30390 transitions. [2021-12-17 17:04:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 17:04:37,905 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-12-17 17:04:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:37,923 INFO L225 Difference]: With dead ends: 20685 [2021-12-17 17:04:37,923 INFO L226 Difference]: Without dead ends: 13949 [2021-12-17 17:04:37,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:04:37,932 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1610 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:37,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 796 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 17:04:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13949 states. [2021-12-17 17:04:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13949 to 7016. [2021-12-17 17:04:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 1.4678545972915182) internal successors, (10297), 7015 states have internal predecessors, (10297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10297 transitions. [2021-12-17 17:04:38,931 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10297 transitions. Word has length 138 [2021-12-17 17:04:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:38,931 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 10297 transitions. [2021-12-17 17:04:38,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10297 transitions. [2021-12-17 17:04:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-17 17:04:38,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:38,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:38,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 17:04:38,933 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:38,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:38,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1378213161, now seen corresponding path program 1 times [2021-12-17 17:04:38,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:38,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802841372] [2021-12-17 17:04:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:38,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:39,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802841372] [2021-12-17 17:04:39,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802841372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:39,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:39,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 17:04:39,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409553385] [2021-12-17 17:04:39,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:39,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:04:39,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:04:39,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:04:39,123 INFO L87 Difference]: Start difference. First operand 7016 states and 10297 transitions. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:41,846 INFO L93 Difference]: Finished difference Result 20465 states and 30049 transitions. [2021-12-17 17:04:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 17:04:41,847 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-12-17 17:04:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:41,864 INFO L225 Difference]: With dead ends: 20465 [2021-12-17 17:04:41,865 INFO L226 Difference]: Without dead ends: 13849 [2021-12-17 17:04:41,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:04:41,873 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1990 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:41,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1990 Valid, 761 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 17:04:41,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13849 states. [2021-12-17 17:04:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13849 to 7016. [2021-12-17 17:04:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 1.4657163221667855) internal successors, (10282), 7015 states have internal predecessors, (10282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10282 transitions. [2021-12-17 17:04:42,942 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10282 transitions. Word has length 139 [2021-12-17 17:04:42,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:42,942 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 10282 transitions. [2021-12-17 17:04:42,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:42,943 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10282 transitions. [2021-12-17 17:04:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-17 17:04:42,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:42,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:42,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 17:04:42,944 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1568534720, now seen corresponding path program 1 times [2021-12-17 17:04:42,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:42,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892817045] [2021-12-17 17:04:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:42,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:42,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:42,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892817045] [2021-12-17 17:04:42,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892817045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:42,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:42,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 17:04:42,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290780039] [2021-12-17 17:04:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:42,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 17:04:42,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 17:04:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 17:04:42,984 INFO L87 Difference]: Start difference. First operand 7016 states and 10282 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:44,891 INFO L93 Difference]: Finished difference Result 19824 states and 29248 transitions. [2021-12-17 17:04:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 17:04:44,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-12-17 17:04:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:44,910 INFO L225 Difference]: With dead ends: 19824 [2021-12-17 17:04:44,911 INFO L226 Difference]: Without dead ends: 13268 [2021-12-17 17:04:44,919 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 [2021-12-17 17:04:44,919 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 154 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:44,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 639 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:04:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13268 states. [2021-12-17 17:04:46,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13268 to 12962. [2021-12-17 17:04:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 12961 states have (on average 1.4620013887817298) internal successors, (18949), 12961 states have internal predecessors, (18949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 18949 transitions. [2021-12-17 17:04:46,908 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 18949 transitions. Word has length 140 [2021-12-17 17:04:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:46,908 INFO L470 AbstractCegarLoop]: Abstraction has 12962 states and 18949 transitions. [2021-12-17 17:04:46,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 18949 transitions. [2021-12-17 17:04:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-17 17:04:46,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:46,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:46,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 17:04:46,910 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -832466688, now seen corresponding path program 1 times [2021-12-17 17:04:46,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:46,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411744666] [2021-12-17 17:04:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:46,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:47,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:47,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411744666] [2021-12-17 17:04:47,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411744666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:47,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:47,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 17:04:47,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961494597] [2021-12-17 17:04:47,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:47,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:04:47,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:04:47,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:04:47,108 INFO L87 Difference]: Start difference. First operand 12962 states and 18949 transitions. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:52,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:04:52,094 INFO L93 Difference]: Finished difference Result 38750 states and 56597 transitions. [2021-12-17 17:04:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 17:04:52,094 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-12-17 17:04:52,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:04:52,136 INFO L225 Difference]: With dead ends: 38750 [2021-12-17 17:04:52,136 INFO L226 Difference]: Without dead ends: 26023 [2021-12-17 17:04:52,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:04:52,148 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1992 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 17:04:52,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 691 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 17:04:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26023 states. [2021-12-17 17:04:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26023 to 12962. [2021-12-17 17:04:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 12961 states have (on average 1.4613069979168274) internal successors, (18940), 12961 states have internal predecessors, (18940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 18940 transitions. [2021-12-17 17:04:54,304 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 18940 transitions. Word has length 140 [2021-12-17 17:04:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:04:54,304 INFO L470 AbstractCegarLoop]: Abstraction has 12962 states and 18940 transitions. [2021-12-17 17:04:54,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:04:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 18940 transitions. [2021-12-17 17:04:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-17 17:04:54,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:04:54,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:04:54,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 17:04:54,306 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:04:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:04:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1758857927, now seen corresponding path program 1 times [2021-12-17 17:04:54,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:04:54,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536381433] [2021-12-17 17:04:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:04:54,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:04:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:04:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:04:54,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:04:54,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536381433] [2021-12-17 17:04:54,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536381433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:04:54,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:04:54,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 17:04:54,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946601446] [2021-12-17 17:04:54,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:04:54,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 17:04:54,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:04:54,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 17:04:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 17:04:54,517 INFO L87 Difference]: Start difference. First operand 12962 states and 18940 transitions. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:05:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:05:09,092 INFO L93 Difference]: Finished difference Result 86935 states and 127349 transitions. [2021-12-17 17:05:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 17:05:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-12-17 17:05:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:05:09,208 INFO L225 Difference]: With dead ends: 86935 [2021-12-17 17:05:09,208 INFO L226 Difference]: Without dead ends: 74433 [2021-12-17 17:05:09,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=309, Invalid=747, Unknown=0, NotChecked=0, Total=1056 [2021-12-17 17:05:09,235 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 2991 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2991 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 17:05:09,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2991 Valid, 1983 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 17:05:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74433 states. [2021-12-17 17:05:12,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74433 to 13135. [2021-12-17 17:05:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13135 states, 13134 states have (on average 1.45918988883813) internal successors, (19165), 13134 states have internal predecessors, (19165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:05:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13135 states to 13135 states and 19165 transitions. [2021-12-17 17:05:12,309 INFO L78 Accepts]: Start accepts. Automaton has 13135 states and 19165 transitions. Word has length 141 [2021-12-17 17:05:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:05:12,309 INFO L470 AbstractCegarLoop]: Abstraction has 13135 states and 19165 transitions. [2021-12-17 17:05:12,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 11 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:05:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13135 states and 19165 transitions. [2021-12-17 17:05:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-17 17:05:12,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:05:12,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:05:12,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 17:05:12,311 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:05:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:05:12,311 INFO L85 PathProgramCache]: Analyzing trace with hash -919023145, now seen corresponding path program 1 times [2021-12-17 17:05:12,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:05:12,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684705616] [2021-12-17 17:05:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:05:12,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:05:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:05:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:05:12,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:05:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684705616] [2021-12-17 17:05:12,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684705616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:05:12,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:05:12,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 17:05:12,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712265987] [2021-12-17 17:05:12,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:05:12,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:05:12,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:05:12,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:05:12,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:05:12,502 INFO L87 Difference]: Start difference. First operand 13135 states and 19165 transitions. Second operand has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:06:01,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:06:01,352 INFO L93 Difference]: Finished difference Result 233092 states and 340368 transitions. [2021-12-17 17:06:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-17 17:06:01,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-12-17 17:06:01,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:06:02,004 INFO L225 Difference]: With dead ends: 233092 [2021-12-17 17:06:02,004 INFO L226 Difference]: Without dead ends: 220208 [2021-12-17 17:06:02,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2021-12-17 17:06:02,064 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 7833 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7833 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 17:06:02,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7833 Valid, 2446 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 17:06:02,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220208 states. [2021-12-17 17:06:06,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220208 to 13147. [2021-12-17 17:06:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13147 states, 13146 states have (on average 1.4584664536741214) internal successors, (19173), 13146 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:06:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13147 states to 13147 states and 19173 transitions. [2021-12-17 17:06:06,590 INFO L78 Accepts]: Start accepts. Automaton has 13147 states and 19173 transitions. Word has length 142 [2021-12-17 17:06:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:06:06,590 INFO L470 AbstractCegarLoop]: Abstraction has 13147 states and 19173 transitions. [2021-12-17 17:06:06,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.923076923076923) internal successors, (142), 12 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:06:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 13147 states and 19173 transitions. [2021-12-17 17:06:06,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:06:06,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:06:06,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:06:06,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 17:06:06,592 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:06:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:06:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash -22724613, now seen corresponding path program 1 times [2021-12-17 17:06:06,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:06:06,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055062762] [2021-12-17 17:06:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:06:06,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:06:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:06:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:06:06,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:06:06,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055062762] [2021-12-17 17:06:06,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055062762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:06:06,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:06:06,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-17 17:06:06,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37422073] [2021-12-17 17:06:06,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:06:06,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 17:06:06,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:06:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 17:06:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-17 17:06:06,970 INFO L87 Difference]: Start difference. First operand 13147 states and 19173 transitions. Second operand has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:06:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:06:34,996 INFO L93 Difference]: Finished difference Result 104628 states and 153264 transitions. [2021-12-17 17:06:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 17:06:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:06:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:06:35,173 INFO L225 Difference]: With dead ends: 104628 [2021-12-17 17:06:35,174 INFO L226 Difference]: Without dead ends: 101846 [2021-12-17 17:06:35,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-12-17 17:06:35,202 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 2428 mSDsluCounter, 5118 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 5943 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 17:06:35,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2428 Valid, 5943 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 17:06:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101846 states. [2021-12-17 17:06:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101846 to 13063. [2021-12-17 17:06:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13063 states, 13062 states have (on average 1.458658704639412) internal successors, (19053), 13062 states have internal predecessors, (19053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:06:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13063 states to 13063 states and 19053 transitions. [2021-12-17 17:06:39,389 INFO L78 Accepts]: Start accepts. Automaton has 13063 states and 19053 transitions. Word has length 143 [2021-12-17 17:06:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:06:39,389 INFO L470 AbstractCegarLoop]: Abstraction has 13063 states and 19053 transitions. [2021-12-17 17:06:39,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:06:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13063 states and 19053 transitions. [2021-12-17 17:06:39,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:06:39,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:06:39,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:06:39,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 17:06:39,391 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:06:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:06:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1765865703, now seen corresponding path program 1 times [2021-12-17 17:06:39,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:06:39,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683766999] [2021-12-17 17:06:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:06:39,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:06:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:06:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:06:42,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:06:42,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683766999] [2021-12-17 17:06:42,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683766999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:06:42,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:06:42,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-12-17 17:06:42,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931402028] [2021-12-17 17:06:42,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:06:42,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-17 17:06:42,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:06:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-17 17:06:42,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2528, Unknown=0, NotChecked=0, Total=2652 [2021-12-17 17:06:42,017 INFO L87 Difference]: Start difference. First operand 13063 states and 19053 transitions. Second operand has 52 states, 52 states have (on average 2.75) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:07:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:07:26,971 INFO L93 Difference]: Finished difference Result 78300 states and 114331 transitions. [2021-12-17 17:07:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-12-17 17:07:26,972 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.75) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:07:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:07:27,085 INFO L225 Difference]: With dead ends: 78300 [2021-12-17 17:07:27,085 INFO L226 Difference]: Without dead ends: 76982 [2021-12-17 17:07:27,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1321, Invalid=8779, Unknown=0, NotChecked=0, Total=10100 [2021-12-17 17:07:27,113 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 4194 mSDsluCounter, 36134 mSDsCounter, 0 mSdLazyCounter, 23917 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4194 SdHoareTripleChecker+Valid, 37228 SdHoareTripleChecker+Invalid, 24015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 23917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:07:27,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4194 Valid, 37228 Invalid, 24015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 23917 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2021-12-17 17:07:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76982 states. [2021-12-17 17:07:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76982 to 13082. [2021-12-17 17:07:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13082 states, 13081 states have (on average 1.458527635501873) internal successors, (19079), 13081 states have internal predecessors, (19079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:07:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13082 states to 13082 states and 19079 transitions. [2021-12-17 17:07:31,875 INFO L78 Accepts]: Start accepts. Automaton has 13082 states and 19079 transitions. Word has length 143 [2021-12-17 17:07:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:07:31,876 INFO L470 AbstractCegarLoop]: Abstraction has 13082 states and 19079 transitions. [2021-12-17 17:07:31,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.75) internal successors, (143), 52 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:07:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 13082 states and 19079 transitions. [2021-12-17 17:07:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:07:31,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:07:31,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:07:31,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 17:07:31,878 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:07:31,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:07:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1613067588, now seen corresponding path program 1 times [2021-12-17 17:07:31,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:07:31,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937471940] [2021-12-17 17:07:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:07:31,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:07:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:07:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:07:32,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:07:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937471940] [2021-12-17 17:07:32,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937471940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:07:32,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:07:32,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-17 17:07:32,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250720424] [2021-12-17 17:07:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:07:32,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-17 17:07:32,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:07:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-17 17:07:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-12-17 17:07:32,421 INFO L87 Difference]: Start difference. First operand 13082 states and 19079 transitions. Second operand has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:07:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:07:56,026 INFO L93 Difference]: Finished difference Result 64923 states and 95043 transitions. [2021-12-17 17:07:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 17:07:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:07:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:07:56,235 INFO L225 Difference]: With dead ends: 64923 [2021-12-17 17:07:56,235 INFO L226 Difference]: Without dead ends: 62289 [2021-12-17 17:07:56,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=291, Invalid=969, Unknown=0, NotChecked=0, Total=1260 [2021-12-17 17:07:56,254 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 3876 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3876 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 17:07:56,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3876 Valid, 5063 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 17:07:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62289 states. [2021-12-17 17:08:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62289 to 13091. [2021-12-17 17:08:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13091 states, 13090 states have (on average 1.4588235294117646) internal successors, (19096), 13090 states have internal predecessors, (19096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13091 states to 13091 states and 19096 transitions. [2021-12-17 17:08:01,417 INFO L78 Accepts]: Start accepts. Automaton has 13091 states and 19096 transitions. Word has length 143 [2021-12-17 17:08:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:01,417 INFO L470 AbstractCegarLoop]: Abstraction has 13091 states and 19096 transitions. [2021-12-17 17:08:01,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 13091 states and 19096 transitions. [2021-12-17 17:08:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:08:01,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:01,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:01,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 17:08:01,419 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:08:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2068170119, now seen corresponding path program 1 times [2021-12-17 17:08:01,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:01,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505299647] [2021-12-17 17:08:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:01,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:01,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:01,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505299647] [2021-12-17 17:08:01,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505299647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:01,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:01,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 17:08:01,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729477168] [2021-12-17 17:08:01,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:01,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:08:01,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:08:01,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:08:01,690 INFO L87 Difference]: Start difference. First operand 13091 states and 19096 transitions. Second operand has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:08:22,412 INFO L93 Difference]: Finished difference Result 53929 states and 78928 transitions. [2021-12-17 17:08:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 17:08:22,413 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:08:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:08:22,595 INFO L225 Difference]: With dead ends: 53929 [2021-12-17 17:08:22,595 INFO L226 Difference]: Without dead ends: 51205 [2021-12-17 17:08:22,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:08:22,610 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 2067 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:08:22,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2067 Valid, 2912 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:08:22,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51205 states. [2021-12-17 17:08:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51205 to 13046. [2021-12-17 17:08:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13046 states, 13045 states have (on average 1.4584131851284017) internal successors, (19025), 13045 states have internal predecessors, (19025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13046 states to 13046 states and 19025 transitions. [2021-12-17 17:08:27,995 INFO L78 Accepts]: Start accepts. Automaton has 13046 states and 19025 transitions. Word has length 143 [2021-12-17 17:08:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:08:27,995 INFO L470 AbstractCegarLoop]: Abstraction has 13046 states and 19025 transitions. [2021-12-17 17:08:27,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.0) internal successors, (143), 13 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:08:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 13046 states and 19025 transitions. [2021-12-17 17:08:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:08:27,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:08:27,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:08:27,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 17:08:27,997 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:08:27,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:08:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash -547479174, now seen corresponding path program 1 times [2021-12-17 17:08:27,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:08:27,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861227699] [2021-12-17 17:08:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:08:27,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:08:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:08:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:08:30,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:08:30,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861227699] [2021-12-17 17:08:30,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861227699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:08:30,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:08:30,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-12-17 17:08:30,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237688038] [2021-12-17 17:08:30,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:08:30,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-17 17:08:30,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:08:30,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-17 17:08:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=2439, Unknown=0, NotChecked=0, Total=2550 [2021-12-17 17:08:30,515 INFO L87 Difference]: Start difference. First operand 13046 states and 19025 transitions. Second operand has 51 states, 51 states have (on average 2.803921568627451) internal successors, (143), 51 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:09:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:09:26,425 INFO L93 Difference]: Finished difference Result 86719 states and 126701 transitions. [2021-12-17 17:09:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-17 17:09:26,426 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.803921568627451) internal successors, (143), 51 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:09:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:09:26,558 INFO L225 Difference]: With dead ends: 86719 [2021-12-17 17:09:26,558 INFO L226 Difference]: Without dead ends: 84085 [2021-12-17 17:09:26,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1299, Invalid=8403, Unknown=0, NotChecked=0, Total=9702 [2021-12-17 17:09:26,582 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 4683 mSDsluCounter, 29804 mSDsCounter, 0 mSdLazyCounter, 19769 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 30736 SdHoareTripleChecker+Invalid, 19876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 19769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:09:26,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4683 Valid, 30736 Invalid, 19876 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 19769 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2021-12-17 17:09:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84085 states. [2021-12-17 17:09:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84085 to 13064. [2021-12-17 17:09:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13064 states, 13063 states have (on average 1.4582408328867795) internal successors, (19049), 13063 states have internal predecessors, (19049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:09:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13064 states to 13064 states and 19049 transitions. [2021-12-17 17:09:32,629 INFO L78 Accepts]: Start accepts. Automaton has 13064 states and 19049 transitions. Word has length 143 [2021-12-17 17:09:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:09:32,629 INFO L470 AbstractCegarLoop]: Abstraction has 13064 states and 19049 transitions. [2021-12-17 17:09:32,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.803921568627451) internal successors, (143), 51 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:09:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13064 states and 19049 transitions. [2021-12-17 17:09:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:09:32,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:09:32,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:09:32,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 17:09:32,631 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:09:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:09:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash 818666907, now seen corresponding path program 1 times [2021-12-17 17:09:32,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:09:32,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564174960] [2021-12-17 17:09:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:09:32,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:09:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:09:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:09:33,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:09:33,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564174960] [2021-12-17 17:09:33,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564174960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:09:33,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:09:33,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 17:09:33,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425085826] [2021-12-17 17:09:33,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:09:33,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 17:09:33,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:09:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 17:09:33,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-17 17:09:33,107 INFO L87 Difference]: Start difference. First operand 13064 states and 19049 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:09:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:09:55,665 INFO L93 Difference]: Finished difference Result 49346 states and 72193 transitions. [2021-12-17 17:09:55,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 17:09:55,666 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:09:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:09:55,734 INFO L225 Difference]: With dead ends: 49346 [2021-12-17 17:09:55,734 INFO L226 Difference]: Without dead ends: 46609 [2021-12-17 17:09:55,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2021-12-17 17:09:55,750 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 3333 mSDsluCounter, 5633 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 6221 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 17:09:55,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3333 Valid, 6221 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 17:09:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46609 states. [2021-12-17 17:10:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46609 to 13050. [2021-12-17 17:10:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13050 states, 13049 states have (on average 1.4578894934477737) internal successors, (19024), 13049 states have internal predecessors, (19024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:10:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13050 states to 13050 states and 19024 transitions. [2021-12-17 17:10:01,814 INFO L78 Accepts]: Start accepts. Automaton has 13050 states and 19024 transitions. Word has length 143 [2021-12-17 17:10:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:10:01,814 INFO L470 AbstractCegarLoop]: Abstraction has 13050 states and 19024 transitions. [2021-12-17 17:10:01,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 19 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:10:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 13050 states and 19024 transitions. [2021-12-17 17:10:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:10:01,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:10:01,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:10:01,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 17:10:01,815 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:10:01,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:10:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1171772924, now seen corresponding path program 1 times [2021-12-17 17:10:01,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:10:01,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831984411] [2021-12-17 17:10:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:10:01,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:10:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:10:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:10:02,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:10:02,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831984411] [2021-12-17 17:10:02,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831984411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:10:02,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:10:02,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-17 17:10:02,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780703997] [2021-12-17 17:10:02,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:10:02,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 17:10:02,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:10:02,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 17:10:02,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-17 17:10:02,137 INFO L87 Difference]: Start difference. First operand 13050 states and 19024 transitions. Second operand has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:10:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:10:31,112 INFO L93 Difference]: Finished difference Result 59772 states and 87440 transitions. [2021-12-17 17:10:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 17:10:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:10:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:10:31,202 INFO L225 Difference]: With dead ends: 59772 [2021-12-17 17:10:31,202 INFO L226 Difference]: Without dead ends: 56974 [2021-12-17 17:10:31,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-12-17 17:10:31,218 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 2465 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 4594 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 17:10:31,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2465 Valid, 4594 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 17:10:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56974 states. [2021-12-17 17:10:37,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56974 to 12926. [2021-12-17 17:10:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12926 states, 12925 states have (on average 1.4594197292069633) internal successors, (18863), 12925 states have internal predecessors, (18863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:10:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12926 states to 12926 states and 18863 transitions. [2021-12-17 17:10:37,862 INFO L78 Accepts]: Start accepts. Automaton has 12926 states and 18863 transitions. Word has length 143 [2021-12-17 17:10:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:10:37,862 INFO L470 AbstractCegarLoop]: Abstraction has 12926 states and 18863 transitions. [2021-12-17 17:10:37,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:10:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 12926 states and 18863 transitions. [2021-12-17 17:10:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:10:37,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:10:37,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:10:37,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 17:10:37,863 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:10:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:10:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1507569567, now seen corresponding path program 1 times [2021-12-17 17:10:37,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:10:37,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4005817] [2021-12-17 17:10:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:10:37,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:10:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:10:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:10:37,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:10:37,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4005817] [2021-12-17 17:10:37,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4005817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:10:37,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:10:37,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 17:10:37,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149983692] [2021-12-17 17:10:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:10:37,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 17:10:37,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:10:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 17:10:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 17:10:37,990 INFO L87 Difference]: Start difference. First operand 12926 states and 18863 transitions. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:10:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:10:51,860 INFO L93 Difference]: Finished difference Result 38733 states and 56503 transitions. [2021-12-17 17:10:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 17:10:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:10:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:10:51,898 INFO L225 Difference]: With dead ends: 38733 [2021-12-17 17:10:51,898 INFO L226 Difference]: Without dead ends: 25985 [2021-12-17 17:10:51,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-12-17 17:10:51,909 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1552 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 17:10:51,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 875 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 17:10:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25985 states. [2021-12-17 17:10:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25985 to 12917. [2021-12-17 17:10:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12917 states, 12916 states have (on average 1.4594301641375038) internal successors, (18850), 12916 states have internal predecessors, (18850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:10:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12917 states to 12917 states and 18850 transitions. [2021-12-17 17:10:58,373 INFO L78 Accepts]: Start accepts. Automaton has 12917 states and 18850 transitions. Word has length 143 [2021-12-17 17:10:58,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:10:58,373 INFO L470 AbstractCegarLoop]: Abstraction has 12917 states and 18850 transitions. [2021-12-17 17:10:58,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:10:58,373 INFO L276 IsEmpty]: Start isEmpty. Operand 12917 states and 18850 transitions. [2021-12-17 17:10:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:10:58,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:10:58,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:10:58,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-17 17:10:58,375 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:10:58,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:10:58,375 INFO L85 PathProgramCache]: Analyzing trace with hash -501341315, now seen corresponding path program 1 times [2021-12-17 17:10:58,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:10:58,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119055901] [2021-12-17 17:10:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:10:58,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:10:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:10:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:10:58,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:10:58,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119055901] [2021-12-17 17:10:58,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119055901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:10:58,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:10:58,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 17:10:58,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476286574] [2021-12-17 17:10:58,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:10:58,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 17:10:58,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:10:58,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 17:10:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-17 17:10:58,631 INFO L87 Difference]: Start difference. First operand 12917 states and 18850 transitions. Second operand has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:11:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:11:33,440 INFO L93 Difference]: Finished difference Result 65582 states and 96100 transitions. [2021-12-17 17:11:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 17:11:33,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:11:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:11:33,535 INFO L225 Difference]: With dead ends: 65582 [2021-12-17 17:11:33,536 INFO L226 Difference]: Without dead ends: 62891 [2021-12-17 17:11:33,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:11:33,553 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 2747 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:11:33,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 2870 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:11:33,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62891 states. [2021-12-17 17:11:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62891 to 12871. [2021-12-17 17:11:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12871 states, 12870 states have (on average 1.4600621600621602) internal successors, (18791), 12870 states have internal predecessors, (18791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:11:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12871 states to 12871 states and 18791 transitions. [2021-12-17 17:11:40,882 INFO L78 Accepts]: Start accepts. Automaton has 12871 states and 18791 transitions. Word has length 143 [2021-12-17 17:11:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:11:40,882 INFO L470 AbstractCegarLoop]: Abstraction has 12871 states and 18791 transitions. [2021-12-17 17:11:40,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.916666666666666) internal successors, (143), 12 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:11:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 12871 states and 18791 transitions. [2021-12-17 17:11:40,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 17:11:40,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:11:40,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:11:40,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-17 17:11:40,884 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:11:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:11:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash 206701483, now seen corresponding path program 1 times [2021-12-17 17:11:40,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:11:40,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968346602] [2021-12-17 17:11:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:11:40,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:11:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:11:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:11:40,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:11:40,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968346602] [2021-12-17 17:11:40,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968346602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:11:40,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:11:40,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 17:11:40,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615949587] [2021-12-17 17:11:40,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:11:40,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 17:11:40,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:11:40,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 17:11:40,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 17:11:40,980 INFO L87 Difference]: Start difference. First operand 12871 states and 18791 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:11:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:11:55,223 INFO L93 Difference]: Finished difference Result 37885 states and 55515 transitions. [2021-12-17 17:11:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 17:11:55,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-17 17:11:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:11:55,261 INFO L225 Difference]: With dead ends: 37885 [2021-12-17 17:11:55,261 INFO L226 Difference]: Without dead ends: 25298 [2021-12-17 17:11:55,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-12-17 17:11:55,275 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 919 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:11:55,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 677 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:11:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25298 states. [2021-12-17 17:12:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25298 to 12796. [2021-12-17 17:12:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12796 states, 12795 states have (on average 1.4613520906604143) internal successors, (18698), 12795 states have internal predecessors, (18698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:12:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12796 states to 12796 states and 18698 transitions. [2021-12-17 17:12:02,414 INFO L78 Accepts]: Start accepts. Automaton has 12796 states and 18698 transitions. Word has length 143 [2021-12-17 17:12:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:12:02,414 INFO L470 AbstractCegarLoop]: Abstraction has 12796 states and 18698 transitions. [2021-12-17 17:12:02,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:12:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 12796 states and 18698 transitions. [2021-12-17 17:12:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 17:12:02,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:12:02,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:12:02,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-17 17:12:02,416 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:12:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:12:02,416 INFO L85 PathProgramCache]: Analyzing trace with hash 40994610, now seen corresponding path program 1 times [2021-12-17 17:12:02,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:12:02,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620945844] [2021-12-17 17:12:02,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:12:02,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:12:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:12:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:12:02,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:12:02,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620945844] [2021-12-17 17:12:02,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620945844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:12:02,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:12:02,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 17:12:02,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886069491] [2021-12-17 17:12:02,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:12:02,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:12:02,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:12:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:12:02,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:12:02,694 INFO L87 Difference]: Start difference. First operand 12796 states and 18698 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:12:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:12:32,227 INFO L93 Difference]: Finished difference Result 53046 states and 77769 transitions. [2021-12-17 17:12:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 17:12:32,227 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-12-17 17:12:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:12:32,307 INFO L225 Difference]: With dead ends: 53046 [2021-12-17 17:12:32,307 INFO L226 Difference]: Without dead ends: 50387 [2021-12-17 17:12:32,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:12:32,321 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 2296 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:12:32,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2296 Valid, 2433 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:12:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50387 states. [2021-12-17 17:12:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50387 to 12759. [2021-12-17 17:12:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12759 states, 12758 states have (on average 1.4614359617494905) internal successors, (18645), 12758 states have internal predecessors, (18645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:12:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12759 states to 12759 states and 18645 transitions. [2021-12-17 17:12:39,980 INFO L78 Accepts]: Start accepts. Automaton has 12759 states and 18645 transitions. Word has length 144 [2021-12-17 17:12:39,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:12:39,980 INFO L470 AbstractCegarLoop]: Abstraction has 12759 states and 18645 transitions. [2021-12-17 17:12:39,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:12:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 12759 states and 18645 transitions. [2021-12-17 17:12:39,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 17:12:39,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:12:39,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:12:39,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-17 17:12:39,981 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:12:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:12:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash 348960096, now seen corresponding path program 1 times [2021-12-17 17:12:39,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:12:39,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600321040] [2021-12-17 17:12:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:12:39,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:12:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:12:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:12:42,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:12:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600321040] [2021-12-17 17:12:42,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600321040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:12:42,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:12:42,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-12-17 17:12:42,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281937717] [2021-12-17 17:12:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:12:42,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-17 17:12:42,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:12:42,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-17 17:12:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=2231, Unknown=0, NotChecked=0, Total=2352 [2021-12-17 17:12:42,121 INFO L87 Difference]: Start difference. First operand 12759 states and 18645 transitions. Second operand has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:13:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:13:10,206 INFO L93 Difference]: Finished difference Result 39295 states and 57548 transitions. [2021-12-17 17:13:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-17 17:13:10,207 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-12-17 17:13:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:13:10,239 INFO L225 Difference]: With dead ends: 39295 [2021-12-17 17:13:10,239 INFO L226 Difference]: Without dead ends: 26793 [2021-12-17 17:13:10,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1229, Invalid=7701, Unknown=0, NotChecked=0, Total=8930 [2021-12-17 17:13:10,251 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 1954 mSDsluCounter, 12437 mSDsCounter, 0 mSdLazyCounter, 9434 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 12840 SdHoareTripleChecker+Invalid, 9508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 9434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-17 17:13:10,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 12840 Invalid, 9508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 9434 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-17 17:13:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26793 states. [2021-12-17 17:13:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26793 to 12794. [2021-12-17 17:13:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12794 states, 12793 states have (on average 1.4607207066364418) internal successors, (18687), 12793 states have internal predecessors, (18687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:13:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12794 states to 12794 states and 18687 transitions. [2021-12-17 17:13:17,843 INFO L78 Accepts]: Start accepts. Automaton has 12794 states and 18687 transitions. Word has length 144 [2021-12-17 17:13:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:13:17,843 INFO L470 AbstractCegarLoop]: Abstraction has 12794 states and 18687 transitions. [2021-12-17 17:13:17,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:13:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 12794 states and 18687 transitions. [2021-12-17 17:13:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 17:13:17,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:13:17,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:13:17,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-17 17:13:17,844 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:13:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:13:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1051237559, now seen corresponding path program 1 times [2021-12-17 17:13:17,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:13:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075064318] [2021-12-17 17:13:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:13:17,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:13:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:13:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:13:18,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:13:18,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075064318] [2021-12-17 17:13:18,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075064318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:13:18,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:13:18,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 17:13:18,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777148792] [2021-12-17 17:13:18,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:13:18,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 17:13:18,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:13:18,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 17:13:18,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-17 17:13:18,360 INFO L87 Difference]: Start difference. First operand 12794 states and 18687 transitions. Second operand has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 19 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:14:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:14:31,484 INFO L93 Difference]: Finished difference Result 120912 states and 177400 transitions. [2021-12-17 17:14:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 17:14:31,484 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 19 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-12-17 17:14:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:14:31,653 INFO L225 Difference]: With dead ends: 120912 [2021-12-17 17:14:31,653 INFO L226 Difference]: Without dead ends: 118238 [2021-12-17 17:14:31,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=327, Invalid=1479, Unknown=0, NotChecked=0, Total=1806 [2021-12-17 17:14:31,676 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 1989 mSDsluCounter, 14092 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 15128 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 17:14:31,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 15128 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 17:14:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118238 states. [2021-12-17 17:14:40,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118238 to 12784. [2021-12-17 17:14:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12784 states, 12783 states have (on average 1.4608464366737073) internal successors, (18674), 12783 states have internal predecessors, (18674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:14:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12784 states to 12784 states and 18674 transitions. [2021-12-17 17:14:40,273 INFO L78 Accepts]: Start accepts. Automaton has 12784 states and 18674 transitions. Word has length 144 [2021-12-17 17:14:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:14:40,273 INFO L470 AbstractCegarLoop]: Abstraction has 12784 states and 18674 transitions. [2021-12-17 17:14:40,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 19 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:14:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 12784 states and 18674 transitions. [2021-12-17 17:14:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 17:14:40,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:14:40,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:14:40,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-17 17:14:40,275 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:14:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:14:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1484552595, now seen corresponding path program 1 times [2021-12-17 17:14:40,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:14:40,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210059436] [2021-12-17 17:14:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:14:40,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:14:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:14:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:14:40,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:14:40,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210059436] [2021-12-17 17:14:40,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210059436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:14:40,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:14:40,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-17 17:14:40,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013174781] [2021-12-17 17:14:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:14:40,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 17:14:40,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:14:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 17:14:40,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-17 17:14:40,595 INFO L87 Difference]: Start difference. First operand 12784 states and 18674 transitions. Second operand has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 14 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:15:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:15:31,395 INFO L93 Difference]: Finished difference Result 78008 states and 114424 transitions. [2021-12-17 17:15:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 17:15:31,396 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 14 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-12-17 17:15:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:15:31,500 INFO L225 Difference]: With dead ends: 78008 [2021-12-17 17:15:31,500 INFO L226 Difference]: Without dead ends: 75345 [2021-12-17 17:15:31,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-12-17 17:15:31,519 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 2022 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 17:15:31,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2022 Valid, 4283 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 17:15:31,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75345 states. [2021-12-17 17:15:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75345 to 12744. [2021-12-17 17:15:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12744 states, 12743 states have (on average 1.461586753511732) internal successors, (18625), 12743 states have internal predecessors, (18625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:15:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12744 states to 12744 states and 18625 transitions. [2021-12-17 17:15:40,372 INFO L78 Accepts]: Start accepts. Automaton has 12744 states and 18625 transitions. Word has length 144 [2021-12-17 17:15:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:15:40,372 INFO L470 AbstractCegarLoop]: Abstraction has 12744 states and 18625 transitions. [2021-12-17 17:15:40,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 14 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:15:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 12744 states and 18625 transitions. [2021-12-17 17:15:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-17 17:15:40,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:15:40,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:15:40,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-17 17:15:40,373 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:15:40,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:15:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1856160616, now seen corresponding path program 1 times [2021-12-17 17:15:40,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:15:40,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144320016] [2021-12-17 17:15:40,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:15:40,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:15:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:15:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:15:40,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:15:40,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144320016] [2021-12-17 17:15:40,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144320016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:15:40,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:15:40,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 17:15:40,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500550524] [2021-12-17 17:15:40,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:15:40,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 17:15:40,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:15:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 17:15:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:15:40,435 INFO L87 Difference]: Start difference. First operand 12744 states and 18625 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:15:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:15:52,805 INFO L93 Difference]: Finished difference Result 30656 states and 44943 transitions. [2021-12-17 17:15:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 17:15:52,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-12-17 17:15:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:15:52,826 INFO L225 Difference]: With dead ends: 30656 [2021-12-17 17:15:52,826 INFO L226 Difference]: Without dead ends: 18154 [2021-12-17 17:15:52,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 17:15:52,835 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 232 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 17:15:52,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 779 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 17:15:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2021-12-17 17:16:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 18152. [2021-12-17 17:16:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18152 states, 18151 states have (on average 1.4589278827612804) internal successors, (26481), 18151 states have internal predecessors, (26481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:16:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18152 states to 18152 states and 26481 transitions. [2021-12-17 17:16:05,238 INFO L78 Accepts]: Start accepts. Automaton has 18152 states and 26481 transitions. Word has length 145 [2021-12-17 17:16:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:16:05,238 INFO L470 AbstractCegarLoop]: Abstraction has 18152 states and 26481 transitions. [2021-12-17 17:16:05,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:16:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 18152 states and 26481 transitions. [2021-12-17 17:16:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-17 17:16:05,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:16:05,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:16:05,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-17 17:16:05,240 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:16:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:16:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1180670849, now seen corresponding path program 1 times [2021-12-17 17:16:05,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:16:05,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152802520] [2021-12-17 17:16:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:16:05,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:16:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:16:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:16:05,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:16:05,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152802520] [2021-12-17 17:16:05,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152802520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:16:05,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:16:05,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 17:16:05,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559714801] [2021-12-17 17:16:05,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:16:05,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:16:05,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:16:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:16:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:16:05,496 INFO L87 Difference]: Start difference. First operand 18152 states and 26481 transitions. Second operand has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:16:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:16:56,589 INFO L93 Difference]: Finished difference Result 75918 states and 111000 transitions. [2021-12-17 17:16:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 17:16:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-12-17 17:16:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:16:56,687 INFO L225 Difference]: With dead ends: 75918 [2021-12-17 17:16:56,687 INFO L226 Difference]: Without dead ends: 71972 [2021-12-17 17:16:56,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-12-17 17:16:56,706 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 2067 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:16:56,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2067 Valid, 2917 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:16:56,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71972 states. [2021-12-17 17:17:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71972 to 18112. [2021-12-17 17:17:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18112 states, 18111 states have (on average 1.459554966594887) internal successors, (26434), 18111 states have internal predecessors, (26434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:17:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18112 states to 18112 states and 26434 transitions. [2021-12-17 17:17:09,775 INFO L78 Accepts]: Start accepts. Automaton has 18112 states and 26434 transitions. Word has length 145 [2021-12-17 17:17:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 17:17:09,776 INFO L470 AbstractCegarLoop]: Abstraction has 18112 states and 26434 transitions. [2021-12-17 17:17:09,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:17:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 18112 states and 26434 transitions. [2021-12-17 17:17:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-17 17:17:09,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 17:17:09,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 17:17:09,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-17 17:17:09,777 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 17:17:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 17:17:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1302396973, now seen corresponding path program 1 times [2021-12-17 17:17:09,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 17:17:09,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679980623] [2021-12-17 17:17:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 17:17:09,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 17:17:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 17:17:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 17:17:10,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 17:17:10,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679980623] [2021-12-17 17:17:10,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679980623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 17:17:10,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 17:17:10,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 17:17:10,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145432393] [2021-12-17 17:17:10,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 17:17:10,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 17:17:10,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 17:17:10,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 17:17:10,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 17:17:10,467 INFO L87 Difference]: Start difference. First operand 18112 states and 26434 transitions. Second operand has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 17:17:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 17:17:50,501 INFO L93 Difference]: Finished difference Result 58886 states and 85963 transitions. [2021-12-17 17:17:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 17:17:50,502 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-12-17 17:17:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 17:17:50,567 INFO L225 Difference]: With dead ends: 58886 [2021-12-17 17:17:50,567 INFO L226 Difference]: Without dead ends: 55616 [2021-12-17 17:17:50,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2021-12-17 17:17:50,581 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 2371 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 17:17:50,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2371 Valid, 2997 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 17:17:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55616 states. Killed by 15