/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:09:55,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:09:55,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:09:55,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:09:55,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:09:55,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:09:55,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:09:55,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:09:55,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:09:55,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:09:55,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:09:55,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:09:55,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:09:55,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:09:55,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:09:55,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:09:55,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:09:55,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:09:55,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:09:55,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:09:55,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:09:55,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:09:55,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:09:55,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:09:55,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:09:55,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:09:55,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:09:55,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:09:55,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:09:55,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:09:55,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:09:55,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:09:55,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:09:55,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:09:55,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:09:55,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:09:55,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:09:55,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:09:55,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:09:55,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:09:55,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:09:55,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:09:55,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:09:55,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:09:55,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:09:55,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:09:55,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:09:55,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:09:55,413 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:09:55,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:09:55,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:09:55,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:09:55,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:09:55,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:09:55,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:09:55,414 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:09:55,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:09:55,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:09:55,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:09:55,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:09:55,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:09:55,416 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:09:55,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:09:55,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:09:55,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:09:55,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:09:55,417 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:09:55,417 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:09:55,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:09:55,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:09:55,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:09:55,635 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:09:55,635 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:09:55,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c [2022-01-11 06:09:55,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a123636/eb9f48db83124eaea30db2136e3c202c/FLAG9251dd804 [2022-01-11 06:09:56,038 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:09:56,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c [2022-01-11 06:09:56,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a123636/eb9f48db83124eaea30db2136e3c202c/FLAG9251dd804 [2022-01-11 06:09:56,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a123636/eb9f48db83124eaea30db2136e3c202c [2022-01-11 06:09:56,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:09:56,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:09:56,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:09:56,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:09:56,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:09:56,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2247f52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56, skipping insertion in model container [2022-01-11 06:09:56,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:09:56,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:09:56,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c[12966,12979] [2022-01-11 06:09:56,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:09:56,720 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:09:56,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.UNBOUNDED.pals.c[12966,12979] [2022-01-11 06:09:56,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:09:56,771 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:09:56,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56 WrapperNode [2022-01-11 06:09:56,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:09:56,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:09:56,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:09:56,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:09:56,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,817 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 426 [2022-01-11 06:09:56,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:09:56,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:09:56,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:09:56,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:09:56,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:09:56,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:09:56,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:09:56,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:09:56,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (1/1) ... [2022-01-11 06:09:56,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:09:56,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:09:56,892 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) [2022-01-11 06:09:56,899 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 [2022-01-11 06:09:56,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:09:56,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:09:56,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:09:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:09:57,028 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:09:57,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:09:57,488 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:09:57,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:09:57,494 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 06:09:57,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:09:57 BoogieIcfgContainer [2022-01-11 06:09:57,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:09:57,496 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:09:57,497 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:09:57,501 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:09:57,503 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:09:57" (1/1) ... [2022-01-11 06:09:57,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:09:57 BasicIcfg [2022-01-11 06:09:57,794 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:09:57,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:09:57,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:09:57,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:09:57,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:09:56" (1/4) ... [2022-01-11 06:09:57,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3d044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:09:57, skipping insertion in model container [2022-01-11 06:09:57,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:09:56" (2/4) ... [2022-01-11 06:09:57,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3d044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:09:57, skipping insertion in model container [2022-01-11 06:09:57,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:09:57" (3/4) ... [2022-01-11 06:09:57,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3d044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:09:57, skipping insertion in model container [2022-01-11 06:09:57,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:09:57" (4/4) ... [2022-01-11 06:09:57,803 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 06:09:57,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:09:57,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:09:57,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:09:57,857 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 [2022-01-11 06:09:57,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:09:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 06:09:57,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:57,877 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] [2022-01-11 06:09:57,878 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:57,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1949686075, now seen corresponding path program 1 times [2022-01-11 06:09:57,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:57,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315391448] [2022-01-11 06:09:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:57,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:58,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:58,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315391448] [2022-01-11 06:09:58,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315391448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:58,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:58,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:09:58,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054298982] [2022-01-11 06:09:58,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:58,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 06:09:58,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 06:09:58,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:09:58,176 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:58,206 INFO L93 Difference]: Finished difference Result 214 states and 367 transitions. [2022-01-11 06:09:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 06:09:58,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 06:09:58,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:58,218 INFO L225 Difference]: With dead ends: 214 [2022-01-11 06:09:58,218 INFO L226 Difference]: Without dead ends: 133 [2022-01-11 06:09:58,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:09:58,225 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:09:58,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:09:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-11 06:09:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-01-11 06:09:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 132 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 229 transitions. [2022-01-11 06:09:58,270 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 229 transitions. Word has length 37 [2022-01-11 06:09:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:58,271 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 229 transitions. [2022-01-11 06:09:58,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 229 transitions. [2022-01-11 06:09:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 06:09:58,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:58,275 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] [2022-01-11 06:09:58,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:09:58,275 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:58,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:58,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1936456996, now seen corresponding path program 1 times [2022-01-11 06:09:58,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:58,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315808671] [2022-01-11 06:09:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:58,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:58,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:58,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315808671] [2022-01-11 06:09:58,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315808671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:58,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:58,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:09:58,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076982409] [2022-01-11 06:09:58,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:58,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:09:58,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:09:58,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:09:58,450 INFO L87 Difference]: Start difference. First operand 133 states and 229 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:58,523 INFO L93 Difference]: Finished difference Result 213 states and 360 transitions. [2022-01-11 06:09:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:09:58,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 06:09:58,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:58,527 INFO L225 Difference]: With dead ends: 213 [2022-01-11 06:09:58,527 INFO L226 Difference]: Without dead ends: 133 [2022-01-11 06:09:58,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:09:58,528 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:09:58,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 878 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:09:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-01-11 06:09:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-01-11 06:09:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 132 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2022-01-11 06:09:58,534 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 37 [2022-01-11 06:09:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:58,534 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2022-01-11 06:09:58,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2022-01-11 06:09:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:09:58,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:58,535 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] [2022-01-11 06:09:58,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:09:58,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:58,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash -161924253, now seen corresponding path program 1 times [2022-01-11 06:09:58,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:58,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184227016] [2022-01-11 06:09:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:58,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:58,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:58,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184227016] [2022-01-11 06:09:58,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184227016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:58,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:58,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:09:58,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841594059] [2022-01-11 06:09:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:58,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:09:58,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:09:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:09:58,741 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:58,863 INFO L93 Difference]: Finished difference Result 276 states and 439 transitions. [2022-01-11 06:09:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:09:58,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 06:09:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:58,868 INFO L225 Difference]: With dead ends: 276 [2022-01-11 06:09:58,868 INFO L226 Difference]: Without dead ends: 200 [2022-01-11 06:09:58,869 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 [2022-01-11 06:09:58,870 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 101 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:09:58,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 356 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:09:58,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-11 06:09:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2022-01-11 06:09:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.5510204081632653) internal successors, (304), 196 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 304 transitions. [2022-01-11 06:09:58,887 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 304 transitions. Word has length 63 [2022-01-11 06:09:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:58,887 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 304 transitions. [2022-01-11 06:09:58,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 304 transitions. [2022-01-11 06:09:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:09:58,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:58,889 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] [2022-01-11 06:09:58,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:09:58,889 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1762350011, now seen corresponding path program 1 times [2022-01-11 06:09:58,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:58,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914625191] [2022-01-11 06:09:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:58,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:59,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:59,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914625191] [2022-01-11 06:09:59,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914625191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:59,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:59,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:09:59,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83624050] [2022-01-11 06:09:59,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:59,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:09:59,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:09:59,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:09:59,043 INFO L87 Difference]: Start difference. First operand 197 states and 304 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:59,103 INFO L93 Difference]: Finished difference Result 554 states and 849 transitions. [2022-01-11 06:09:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:09:59,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:09:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:59,107 INFO L225 Difference]: With dead ends: 554 [2022-01-11 06:09:59,108 INFO L226 Difference]: Without dead ends: 382 [2022-01-11 06:09:59,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:09:59,118 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 444 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:09:59,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 459 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:09:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-11 06:09:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2022-01-11 06:09:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.5356200527704484) internal successors, (582), 379 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 582 transitions. [2022-01-11 06:09:59,152 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 582 transitions. Word has length 65 [2022-01-11 06:09:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:59,153 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 582 transitions. [2022-01-11 06:09:59,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 582 transitions. [2022-01-11 06:09:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:09:59,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:59,159 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] [2022-01-11 06:09:59,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:09:59,159 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1781394078, now seen corresponding path program 1 times [2022-01-11 06:09:59,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:59,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592604089] [2022-01-11 06:09:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:59,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:59,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:59,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592604089] [2022-01-11 06:09:59,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592604089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:59,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:59,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:09:59,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016795918] [2022-01-11 06:09:59,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:59,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:09:59,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:59,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:09:59,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:09:59,228 INFO L87 Difference]: Start difference. First operand 380 states and 582 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:59,250 INFO L93 Difference]: Finished difference Result 1102 states and 1682 transitions. [2022-01-11 06:09:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:09:59,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-11 06:09:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:59,253 INFO L225 Difference]: With dead ends: 1102 [2022-01-11 06:09:59,253 INFO L226 Difference]: Without dead ends: 750 [2022-01-11 06:09:59,254 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 [2022-01-11 06:09:59,258 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 191 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:09:59,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 583 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:09:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-01-11 06:09:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 382. [2022-01-11 06:09:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.5328083989501313) internal successors, (584), 381 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 584 transitions. [2022-01-11 06:09:59,286 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 584 transitions. Word has length 66 [2022-01-11 06:09:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:59,286 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 584 transitions. [2022-01-11 06:09:59,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 584 transitions. [2022-01-11 06:09:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:09:59,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:59,289 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] [2022-01-11 06:09:59,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:09:59,290 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:59,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1542591690, now seen corresponding path program 1 times [2022-01-11 06:09:59,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:59,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771701169] [2022-01-11 06:09:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:59,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:59,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:59,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771701169] [2022-01-11 06:09:59,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771701169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:59,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:59,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:09:59,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672322800] [2022-01-11 06:09:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:59,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:09:59,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:09:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:09:59,377 INFO L87 Difference]: Start difference. First operand 382 states and 584 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:59,408 INFO L93 Difference]: Finished difference Result 650 states and 1030 transitions. [2022-01-11 06:09:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:09:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:09:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:59,417 INFO L225 Difference]: With dead ends: 650 [2022-01-11 06:09:59,418 INFO L226 Difference]: Without dead ends: 501 [2022-01-11 06:09:59,418 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 [2022-01-11 06:09:59,419 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 108 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:09:59,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 465 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:09:59,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-01-11 06:09:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2022-01-11 06:09:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.5602409638554218) internal successors, (777), 498 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 777 transitions. [2022-01-11 06:09:59,434 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 777 transitions. Word has length 67 [2022-01-11 06:09:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:59,435 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 777 transitions. [2022-01-11 06:09:59,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 777 transitions. [2022-01-11 06:09:59,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:09:59,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:59,437 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] [2022-01-11 06:09:59,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:09:59,438 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash -65909211, now seen corresponding path program 1 times [2022-01-11 06:09:59,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:59,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17310990] [2022-01-11 06:09:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:59,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:59,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:59,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17310990] [2022-01-11 06:09:59,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17310990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:59,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:59,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:09:59,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271235002] [2022-01-11 06:09:59,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:59,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:09:59,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:09:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:09:59,538 INFO L87 Difference]: Start difference. First operand 499 states and 777 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:59,591 INFO L93 Difference]: Finished difference Result 1457 states and 2267 transitions. [2022-01-11 06:09:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:09:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:09:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:59,595 INFO L225 Difference]: With dead ends: 1457 [2022-01-11 06:09:59,595 INFO L226 Difference]: Without dead ends: 970 [2022-01-11 06:09:59,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:09:59,597 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 406 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:09:59,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 486 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:09:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-01-11 06:09:59,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 968. [2022-01-11 06:09:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.5449844881075492) internal successors, (1494), 967 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1494 transitions. [2022-01-11 06:09:59,631 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1494 transitions. Word has length 67 [2022-01-11 06:09:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:59,631 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1494 transitions. [2022-01-11 06:09:59,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1494 transitions. [2022-01-11 06:09:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:09:59,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:59,633 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] [2022-01-11 06:09:59,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:09:59,633 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:59,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:59,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1277099452, now seen corresponding path program 1 times [2022-01-11 06:09:59,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:59,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863959695] [2022-01-11 06:09:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:59,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:59,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:59,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863959695] [2022-01-11 06:09:59,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863959695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:59,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:59,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:09:59,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135858899] [2022-01-11 06:09:59,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:59,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:09:59,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:59,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:09:59,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:09:59,710 INFO L87 Difference]: Start difference. First operand 968 states and 1494 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:59,741 INFO L93 Difference]: Finished difference Result 1686 states and 2596 transitions. [2022-01-11 06:09:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:09:59,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 06:09:59,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:59,745 INFO L225 Difference]: With dead ends: 1686 [2022-01-11 06:09:59,745 INFO L226 Difference]: Without dead ends: 734 [2022-01-11 06:09:59,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:09:59,747 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 69 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 641 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 [2022-01-11 06:09:59,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 641 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:09:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-01-11 06:09:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2022-01-11 06:09:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.5361527967257844) internal successors, (1126), 733 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1126 transitions. [2022-01-11 06:09:59,774 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1126 transitions. Word has length 67 [2022-01-11 06:09:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:59,776 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1126 transitions. [2022-01-11 06:09:59,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1126 transitions. [2022-01-11 06:09:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:09:59,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:59,780 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] [2022-01-11 06:09:59,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:09:59,781 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1151208723, now seen corresponding path program 1 times [2022-01-11 06:09:59,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:59,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072254639] [2022-01-11 06:09:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:59,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:09:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:09:59,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:09:59,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072254639] [2022-01-11 06:09:59,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072254639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:09:59,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:09:59,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:09:59,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613271333] [2022-01-11 06:09:59,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:09:59,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:09:59,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:09:59,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:09:59,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:09:59,823 INFO L87 Difference]: Start difference. First operand 734 states and 1126 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:09:59,846 INFO L93 Difference]: Finished difference Result 1442 states and 2205 transitions. [2022-01-11 06:09:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:09:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:09:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:09:59,850 INFO L225 Difference]: With dead ends: 1442 [2022-01-11 06:09:59,850 INFO L226 Difference]: Without dead ends: 965 [2022-01-11 06:09:59,850 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 [2022-01-11 06:09:59,852 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 188 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:09:59,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 396 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:09:59,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2022-01-11 06:09:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 734. [2022-01-11 06:09:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.534788540245566) internal successors, (1125), 733 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1125 transitions. [2022-01-11 06:09:59,875 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1125 transitions. Word has length 68 [2022-01-11 06:09:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:09:59,875 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1125 transitions. [2022-01-11 06:09:59,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:09:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1125 transitions. [2022-01-11 06:09:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:09:59,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:09:59,876 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] [2022-01-11 06:09:59,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:09:59,877 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:09:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:09:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1318048156, now seen corresponding path program 1 times [2022-01-11 06:09:59,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:09:59,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936249130] [2022-01-11 06:09:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:09:59,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:09:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:00,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:00,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936249130] [2022-01-11 06:10:00,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936249130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:00,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:00,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:00,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597030376] [2022-01-11 06:10:00,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:00,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:00,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:00,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:00,004 INFO L87 Difference]: Start difference. First operand 734 states and 1125 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:00,054 INFO L93 Difference]: Finished difference Result 1820 states and 2878 transitions. [2022-01-11 06:10:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:10:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:00,058 INFO L225 Difference]: With dead ends: 1820 [2022-01-11 06:10:00,058 INFO L226 Difference]: Without dead ends: 1247 [2022-01-11 06:10:00,060 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 [2022-01-11 06:10:00,061 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 99 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:00,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 363 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-01-11 06:10:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1236. [2022-01-11 06:10:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.5554655870445344) internal successors, (1921), 1235 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1921 transitions. [2022-01-11 06:10:00,113 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1921 transitions. Word has length 69 [2022-01-11 06:10:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:00,114 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1921 transitions. [2022-01-11 06:10:00,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1921 transitions. [2022-01-11 06:10:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 06:10:00,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:00,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:10:00,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:10:00,116 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:00,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1201548212, now seen corresponding path program 1 times [2022-01-11 06:10:00,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:00,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739960320] [2022-01-11 06:10:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:00,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:00,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:00,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739960320] [2022-01-11 06:10:00,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739960320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:00,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:00,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:00,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155386799] [2022-01-11 06:10:00,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:00,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:00,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:00,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:00,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:00,222 INFO L87 Difference]: Start difference. First operand 1236 states and 1921 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:00,339 INFO L93 Difference]: Finished difference Result 3593 states and 5583 transitions. [2022-01-11 06:10:00,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:00,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-11 06:10:00,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:00,347 INFO L225 Difference]: With dead ends: 3593 [2022-01-11 06:10:00,347 INFO L226 Difference]: Without dead ends: 2404 [2022-01-11 06:10:00,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:00,352 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 405 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:00,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 451 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2022-01-11 06:10:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2402. [2022-01-11 06:10:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2401 states have (on average 1.5447730112453144) internal successors, (3709), 2401 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3709 transitions. [2022-01-11 06:10:00,460 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3709 transitions. Word has length 71 [2022-01-11 06:10:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:00,460 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 3709 transitions. [2022-01-11 06:10:00,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3709 transitions. [2022-01-11 06:10:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 06:10:00,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:00,461 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] [2022-01-11 06:10:00,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:10:00,462 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 13117725, now seen corresponding path program 1 times [2022-01-11 06:10:00,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:00,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522811054] [2022-01-11 06:10:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:00,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:00,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:00,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522811054] [2022-01-11 06:10:00,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522811054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:00,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:00,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:00,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168163869] [2022-01-11 06:10:00,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:00,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:00,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:00,514 INFO L87 Difference]: Start difference. First operand 2402 states and 3709 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:00,677 INFO L93 Difference]: Finished difference Result 7112 states and 10980 transitions. [2022-01-11 06:10:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:00,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 06:10:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:00,690 INFO L225 Difference]: With dead ends: 7112 [2022-01-11 06:10:00,690 INFO L226 Difference]: Without dead ends: 4766 [2022-01-11 06:10:00,693 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 [2022-01-11 06:10:00,693 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 177 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:00,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 563 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2022-01-11 06:10:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 2408. [2022-01-11 06:10:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2407 states have (on average 1.5434150394682178) internal successors, (3715), 2407 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3715 transitions. [2022-01-11 06:10:00,820 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3715 transitions. Word has length 72 [2022-01-11 06:10:00,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:00,820 INFO L470 AbstractCegarLoop]: Abstraction has 2408 states and 3715 transitions. [2022-01-11 06:10:00,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:00,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3715 transitions. [2022-01-11 06:10:00,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 06:10:00,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:00,822 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] [2022-01-11 06:10:00,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:10:00,823 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:00,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash -275066658, now seen corresponding path program 1 times [2022-01-11 06:10:00,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:00,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212048991] [2022-01-11 06:10:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:00,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:00,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212048991] [2022-01-11 06:10:00,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212048991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:00,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:00,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:00,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575648313] [2022-01-11 06:10:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:00,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:00,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:00,934 INFO L87 Difference]: Start difference. First operand 2408 states and 3715 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:01,123 INFO L93 Difference]: Finished difference Result 6778 states and 10556 transitions. [2022-01-11 06:10:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:01,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-11 06:10:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:01,145 INFO L225 Difference]: With dead ends: 6778 [2022-01-11 06:10:01,145 INFO L226 Difference]: Without dead ends: 4672 [2022-01-11 06:10:01,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:01,153 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 419 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:01,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 444 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2022-01-11 06:10:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 4670. [2022-01-11 06:10:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 4669 states have (on average 1.5258085243092738) internal successors, (7124), 4669 states have internal predecessors, (7124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:01,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 7124 transitions. [2022-01-11 06:10:01,418 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 7124 transitions. Word has length 73 [2022-01-11 06:10:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:01,418 INFO L470 AbstractCegarLoop]: Abstraction has 4670 states and 7124 transitions. [2022-01-11 06:10:01,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 7124 transitions. [2022-01-11 06:10:01,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 06:10:01,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:01,421 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] [2022-01-11 06:10:01,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:10:01,422 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash 370182581, now seen corresponding path program 1 times [2022-01-11 06:10:01,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:01,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53884161] [2022-01-11 06:10:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:01,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:01,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:01,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53884161] [2022-01-11 06:10:01,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53884161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:01,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:01,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:01,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490503592] [2022-01-11 06:10:01,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:01,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:01,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:01,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:01,478 INFO L87 Difference]: Start difference. First operand 4670 states and 7124 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:01,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:01,606 INFO L93 Difference]: Finished difference Result 8188 states and 12464 transitions. [2022-01-11 06:10:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-11 06:10:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:01,622 INFO L225 Difference]: With dead ends: 8188 [2022-01-11 06:10:01,622 INFO L226 Difference]: Without dead ends: 3556 [2022-01-11 06:10:01,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:01,629 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 47 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 620 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 [2022-01-11 06:10:01,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 620 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:01,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2022-01-11 06:10:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3555. [2022-01-11 06:10:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 3554 states have (on average 1.5171637591446259) internal successors, (5392), 3554 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 5392 transitions. [2022-01-11 06:10:01,885 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 5392 transitions. Word has length 73 [2022-01-11 06:10:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:01,885 INFO L470 AbstractCegarLoop]: Abstraction has 3555 states and 5392 transitions. [2022-01-11 06:10:01,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:01,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 5392 transitions. [2022-01-11 06:10:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 06:10:01,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:01,888 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] [2022-01-11 06:10:01,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:10:01,888 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1600481878, now seen corresponding path program 1 times [2022-01-11 06:10:01,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:01,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624915883] [2022-01-11 06:10:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:01,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:01,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:01,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624915883] [2022-01-11 06:10:01,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624915883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:01,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:01,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:01,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400569982] [2022-01-11 06:10:01,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:01,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:01,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:01,946 INFO L87 Difference]: Start difference. First operand 3555 states and 5392 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:02,107 INFO L93 Difference]: Finished difference Result 6562 states and 10143 transitions. [2022-01-11 06:10:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:02,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-11 06:10:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:02,125 INFO L225 Difference]: With dead ends: 6562 [2022-01-11 06:10:02,125 INFO L226 Difference]: Without dead ends: 4886 [2022-01-11 06:10:02,128 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 [2022-01-11 06:10:02,128 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 100 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:02,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 450 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2022-01-11 06:10:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4884. [2022-01-11 06:10:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4883 states have (on average 1.5257014130657383) internal successors, (7450), 4883 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 7450 transitions. [2022-01-11 06:10:02,346 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 7450 transitions. Word has length 73 [2022-01-11 06:10:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:02,347 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 7450 transitions. [2022-01-11 06:10:02,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 7450 transitions. [2022-01-11 06:10:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 06:10:02,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:02,349 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] [2022-01-11 06:10:02,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:10:02,349 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 763696296, now seen corresponding path program 1 times [2022-01-11 06:10:02,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:02,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345500262] [2022-01-11 06:10:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:02,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:02,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:02,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345500262] [2022-01-11 06:10:02,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345500262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:02,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:02,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:02,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286194977] [2022-01-11 06:10:02,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:02,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:02,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:02,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:02,386 INFO L87 Difference]: Start difference. First operand 4884 states and 7450 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:02,600 INFO L93 Difference]: Finished difference Result 9654 states and 14741 transitions. [2022-01-11 06:10:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:02,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-11 06:10:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:02,612 INFO L225 Difference]: With dead ends: 9654 [2022-01-11 06:10:02,613 INFO L226 Difference]: Without dead ends: 6520 [2022-01-11 06:10:02,616 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 [2022-01-11 06:10:02,616 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 174 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:02,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 411 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2022-01-11 06:10:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 4884. [2022-01-11 06:10:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4883 states have (on average 1.5248822445218104) internal successors, (7446), 4883 states have internal predecessors, (7446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 7446 transitions. [2022-01-11 06:10:02,840 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 7446 transitions. Word has length 74 [2022-01-11 06:10:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:02,841 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 7446 transitions. [2022-01-11 06:10:02,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 7446 transitions. [2022-01-11 06:10:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 06:10:02,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:02,843 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] [2022-01-11 06:10:02,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:10:02,843 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash 692854165, now seen corresponding path program 1 times [2022-01-11 06:10:02,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:02,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191916269] [2022-01-11 06:10:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:02,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:02,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:02,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191916269] [2022-01-11 06:10:02,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191916269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:02,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:02,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:02,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55541640] [2022-01-11 06:10:02,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:02,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:02,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:02,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:02,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:02,965 INFO L87 Difference]: Start difference. First operand 4884 states and 7446 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:03,279 INFO L93 Difference]: Finished difference Result 13123 states and 20327 transitions. [2022-01-11 06:10:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-11 06:10:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:03,294 INFO L225 Difference]: With dead ends: 13123 [2022-01-11 06:10:03,295 INFO L226 Difference]: Without dead ends: 8747 [2022-01-11 06:10:03,299 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 [2022-01-11 06:10:03,300 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:03,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 361 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:03,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2022-01-11 06:10:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 8664. [2022-01-11 06:10:03,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8664 states, 8663 states have (on average 1.5264919773750434) internal successors, (13224), 8663 states have internal predecessors, (13224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 13224 transitions. [2022-01-11 06:10:03,597 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 13224 transitions. Word has length 75 [2022-01-11 06:10:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:03,598 INFO L470 AbstractCegarLoop]: Abstraction has 8664 states and 13224 transitions. [2022-01-11 06:10:03,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 13224 transitions. [2022-01-11 06:10:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:10:03,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:03,600 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] [2022-01-11 06:10:03,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:10:03,600 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash -814331539, now seen corresponding path program 1 times [2022-01-11 06:10:03,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:03,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090644344] [2022-01-11 06:10:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:03,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:03,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:03,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090644344] [2022-01-11 06:10:03,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090644344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:03,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:03,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:03,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649942275] [2022-01-11 06:10:03,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:03,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:03,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:03,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:03,674 INFO L87 Difference]: Start difference. First operand 8664 states and 13224 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:04,180 INFO L93 Difference]: Finished difference Result 22320 states and 34235 transitions. [2022-01-11 06:10:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:04,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 06:10:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:04,207 INFO L225 Difference]: With dead ends: 22320 [2022-01-11 06:10:04,207 INFO L226 Difference]: Without dead ends: 14164 [2022-01-11 06:10:04,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:04,217 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 394 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:04,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 439 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14164 states. [2022-01-11 06:10:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14164 to 14162. [2022-01-11 06:10:04,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14162 states, 14161 states have (on average 1.5098509992232187) internal successors, (21381), 14161 states have internal predecessors, (21381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14162 states to 14162 states and 21381 transitions. [2022-01-11 06:10:04,866 INFO L78 Accepts]: Start accepts. Automaton has 14162 states and 21381 transitions. Word has length 77 [2022-01-11 06:10:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:04,867 INFO L470 AbstractCegarLoop]: Abstraction has 14162 states and 21381 transitions. [2022-01-11 06:10:04,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:04,867 INFO L276 IsEmpty]: Start isEmpty. Operand 14162 states and 21381 transitions. [2022-01-11 06:10:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 06:10:04,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:04,869 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] [2022-01-11 06:10:04,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:10:04,870 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:04,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1080225944, now seen corresponding path program 1 times [2022-01-11 06:10:04,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:04,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459808218] [2022-01-11 06:10:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:04,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:04,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:04,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459808218] [2022-01-11 06:10:04,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459808218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:04,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:04,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:04,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624449667] [2022-01-11 06:10:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:04,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:04,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:04,907 INFO L87 Difference]: Start difference. First operand 14162 states and 21381 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:05,827 INFO L93 Difference]: Finished difference Result 42072 states and 63575 transitions. [2022-01-11 06:10:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:05,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 06:10:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:05,892 INFO L225 Difference]: With dead ends: 42072 [2022-01-11 06:10:05,892 INFO L226 Difference]: Without dead ends: 28193 [2022-01-11 06:10:05,910 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 [2022-01-11 06:10:05,910 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 163 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:05,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 538 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28193 states. [2022-01-11 06:10:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28193 to 14186. [2022-01-11 06:10:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14186 states, 14185 states have (on average 1.5089883679943603) internal successors, (21405), 14185 states have internal predecessors, (21405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14186 states to 14186 states and 21405 transitions. [2022-01-11 06:10:06,593 INFO L78 Accepts]: Start accepts. Automaton has 14186 states and 21405 transitions. Word has length 78 [2022-01-11 06:10:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:06,593 INFO L470 AbstractCegarLoop]: Abstraction has 14186 states and 21405 transitions. [2022-01-11 06:10:06,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 14186 states and 21405 transitions. [2022-01-11 06:10:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:10:06,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:06,596 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] [2022-01-11 06:10:06,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:10:06,596 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash -287790761, now seen corresponding path program 1 times [2022-01-11 06:10:06,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:06,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242937746] [2022-01-11 06:10:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:06,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:06,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:06,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242937746] [2022-01-11 06:10:06,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242937746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:06,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:06,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:06,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20057668] [2022-01-11 06:10:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:06,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:06,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:06,716 INFO L87 Difference]: Start difference. First operand 14186 states and 21405 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:07,800 INFO L93 Difference]: Finished difference Result 37182 states and 56071 transitions. [2022-01-11 06:10:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:07,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 06:10:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:07,857 INFO L225 Difference]: With dead ends: 37182 [2022-01-11 06:10:07,857 INFO L226 Difference]: Without dead ends: 23145 [2022-01-11 06:10:07,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:07,881 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 397 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:07,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 433 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:07,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23145 states. [2022-01-11 06:10:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23145 to 23143. [2022-01-11 06:10:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23143 states, 23142 states have (on average 1.490839166882724) internal successors, (34501), 23142 states have internal predecessors, (34501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23143 states to 23143 states and 34501 transitions. [2022-01-11 06:10:08,967 INFO L78 Accepts]: Start accepts. Automaton has 23143 states and 34501 transitions. Word has length 79 [2022-01-11 06:10:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:08,967 INFO L470 AbstractCegarLoop]: Abstraction has 23143 states and 34501 transitions. [2022-01-11 06:10:08,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 23143 states and 34501 transitions. [2022-01-11 06:10:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:10:08,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:08,971 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] [2022-01-11 06:10:08,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:10:08,972 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash 341125998, now seen corresponding path program 1 times [2022-01-11 06:10:08,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:08,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061036546] [2022-01-11 06:10:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:08,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:09,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:09,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061036546] [2022-01-11 06:10:09,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061036546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:09,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:09,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:09,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844913975] [2022-01-11 06:10:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:09,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:09,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:09,019 INFO L87 Difference]: Start difference. First operand 23143 states and 34501 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:09,748 INFO L93 Difference]: Finished difference Result 39515 states and 58994 transitions. [2022-01-11 06:10:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:09,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 06:10:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:09,781 INFO L225 Difference]: With dead ends: 39515 [2022-01-11 06:10:09,781 INFO L226 Difference]: Without dead ends: 19623 [2022-01-11 06:10:09,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:09,800 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 23 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 598 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 [2022-01-11 06:10:09,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 598 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19623 states. [2022-01-11 06:10:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19623 to 19617. [2022-01-11 06:10:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19617 states, 19616 states have (on average 1.4861337683523654) internal successors, (29152), 19616 states have internal predecessors, (29152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19617 states to 19617 states and 29152 transitions. [2022-01-11 06:10:10,583 INFO L78 Accepts]: Start accepts. Automaton has 19617 states and 29152 transitions. Word has length 79 [2022-01-11 06:10:10,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:10,584 INFO L470 AbstractCegarLoop]: Abstraction has 19617 states and 29152 transitions. [2022-01-11 06:10:10,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:10,584 INFO L276 IsEmpty]: Start isEmpty. Operand 19617 states and 29152 transitions. [2022-01-11 06:10:10,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:10:10,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:10,587 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] [2022-01-11 06:10:10,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:10:10,587 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 511219909, now seen corresponding path program 1 times [2022-01-11 06:10:10,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:10,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936614402] [2022-01-11 06:10:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:10,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:10,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:10,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936614402] [2022-01-11 06:10:10,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936614402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:10,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:10,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:10,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346064945] [2022-01-11 06:10:10,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:10,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:10,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:10,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:10,631 INFO L87 Difference]: Start difference. First operand 19617 states and 29152 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:11,156 INFO L93 Difference]: Finished difference Result 31716 states and 47139 transitions. [2022-01-11 06:10:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:11,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 06:10:11,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:11,182 INFO L225 Difference]: With dead ends: 31716 [2022-01-11 06:10:11,182 INFO L226 Difference]: Without dead ends: 16913 [2022-01-11 06:10:11,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:11,198 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 47 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:11,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 607 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16913 states. [2022-01-11 06:10:11,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16913 to 16913. [2022-01-11 06:10:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16913 states, 16912 states have (on average 1.4832663197729423) internal successors, (25085), 16912 states have internal predecessors, (25085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16913 states to 16913 states and 25085 transitions. [2022-01-11 06:10:12,026 INFO L78 Accepts]: Start accepts. Automaton has 16913 states and 25085 transitions. Word has length 79 [2022-01-11 06:10:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:12,026 INFO L470 AbstractCegarLoop]: Abstraction has 16913 states and 25085 transitions. [2022-01-11 06:10:12,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16913 states and 25085 transitions. [2022-01-11 06:10:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 06:10:12,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:12,030 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] [2022-01-11 06:10:12,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:10:12,030 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:12,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1408600611, now seen corresponding path program 1 times [2022-01-11 06:10:12,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:12,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078594181] [2022-01-11 06:10:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:12,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:12,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:12,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078594181] [2022-01-11 06:10:12,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078594181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:12,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:12,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:12,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20212775] [2022-01-11 06:10:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:12,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:12,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:12,066 INFO L87 Difference]: Start difference. First operand 16913 states and 25085 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:13,000 INFO L93 Difference]: Finished difference Result 30796 states and 45732 transitions. [2022-01-11 06:10:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 06:10:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:13,026 INFO L225 Difference]: With dead ends: 30796 [2022-01-11 06:10:13,027 INFO L226 Difference]: Without dead ends: 21626 [2022-01-11 06:10:13,033 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 [2022-01-11 06:10:13,034 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 160 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:13,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 373 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21626 states. [2022-01-11 06:10:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21626 to 16913. [2022-01-11 06:10:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16913 states, 16912 states have (on average 1.4829706717123936) internal successors, (25080), 16912 states have internal predecessors, (25080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16913 states to 16913 states and 25080 transitions. [2022-01-11 06:10:13,659 INFO L78 Accepts]: Start accepts. Automaton has 16913 states and 25080 transitions. Word has length 80 [2022-01-11 06:10:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:13,659 INFO L470 AbstractCegarLoop]: Abstraction has 16913 states and 25080 transitions. [2022-01-11 06:10:13,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 16913 states and 25080 transitions. [2022-01-11 06:10:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 06:10:13,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:13,662 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] [2022-01-11 06:10:13,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:10:13,662 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 102403520, now seen corresponding path program 1 times [2022-01-11 06:10:13,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:13,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394265154] [2022-01-11 06:10:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:13,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:13,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:13,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394265154] [2022-01-11 06:10:13,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394265154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:13,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:13,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:10:13,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735771186] [2022-01-11 06:10:13,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:13,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:10:13,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:10:13,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:10:13,733 INFO L87 Difference]: Start difference. First operand 16913 states and 25080 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:14,512 INFO L93 Difference]: Finished difference Result 31831 states and 47826 transitions. [2022-01-11 06:10:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:10:14,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-11 06:10:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:14,547 INFO L225 Difference]: With dead ends: 31831 [2022-01-11 06:10:14,548 INFO L226 Difference]: Without dead ends: 23201 [2022-01-11 06:10:14,562 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 [2022-01-11 06:10:14,563 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 90 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:14,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 427 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:10:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23201 states. [2022-01-11 06:10:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23201 to 23199. [2022-01-11 06:10:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23199 states, 23198 states have (on average 1.4863350288818002) internal successors, (34480), 23198 states have internal predecessors, (34480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23199 states to 23199 states and 34480 transitions. [2022-01-11 06:10:15,466 INFO L78 Accepts]: Start accepts. Automaton has 23199 states and 34480 transitions. Word has length 80 [2022-01-11 06:10:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:15,466 INFO L470 AbstractCegarLoop]: Abstraction has 23199 states and 34480 transitions. [2022-01-11 06:10:15,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 23199 states and 34480 transitions. [2022-01-11 06:10:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 06:10:15,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:15,469 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] [2022-01-11 06:10:15,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:10:15,469 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2037051570, now seen corresponding path program 1 times [2022-01-11 06:10:15,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:15,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119702092] [2022-01-11 06:10:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:15,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:15,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:15,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119702092] [2022-01-11 06:10:15,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119702092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:15,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:15,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:10:15,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628962073] [2022-01-11 06:10:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:15,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:10:15,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:15,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:10:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:15,630 INFO L87 Difference]: Start difference. First operand 23199 states and 34480 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:23,518 INFO L93 Difference]: Finished difference Result 118599 states and 180202 transitions. [2022-01-11 06:10:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:10:23,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-11 06:10:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:23,683 INFO L225 Difference]: With dead ends: 118599 [2022-01-11 06:10:23,684 INFO L226 Difference]: Without dead ends: 96457 [2022-01-11 06:10:23,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:10:23,704 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 755 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:23,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1261 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 06:10:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96457 states. [2022-01-11 06:10:27,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96457 to 43959. [2022-01-11 06:10:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43959 states, 43958 states have (on average 1.482688020383093) internal successors, (65176), 43958 states have internal predecessors, (65176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43959 states to 43959 states and 65176 transitions. [2022-01-11 06:10:28,057 INFO L78 Accepts]: Start accepts. Automaton has 43959 states and 65176 transitions. Word has length 81 [2022-01-11 06:10:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:28,057 INFO L470 AbstractCegarLoop]: Abstraction has 43959 states and 65176 transitions. [2022-01-11 06:10:28,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 43959 states and 65176 transitions. [2022-01-11 06:10:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 06:10:28,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:28,078 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] [2022-01-11 06:10:28,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 06:10:28,078 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1246115628, now seen corresponding path program 1 times [2022-01-11 06:10:28,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:28,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060621328] [2022-01-11 06:10:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:28,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:28,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:28,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060621328] [2022-01-11 06:10:28,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060621328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:28,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:28,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:28,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206747635] [2022-01-11 06:10:28,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:28,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:28,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:28,213 INFO L87 Difference]: Start difference. First operand 43959 states and 65176 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:10:39,056 INFO L93 Difference]: Finished difference Result 143329 states and 215717 transitions. [2022-01-11 06:10:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:10:39,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 06:10:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:10:39,265 INFO L225 Difference]: With dead ends: 143329 [2022-01-11 06:10:39,265 INFO L226 Difference]: Without dead ends: 100427 [2022-01-11 06:10:39,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:10:39,307 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 352 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:10:39,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 636 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:10:39,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100427 states. [2022-01-11 06:10:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100427 to 71885. [2022-01-11 06:10:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71885 states, 71884 states have (on average 1.4872294251850202) internal successors, (106908), 71884 states have internal predecessors, (106908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71885 states to 71885 states and 106908 transitions. [2022-01-11 06:10:47,966 INFO L78 Accepts]: Start accepts. Automaton has 71885 states and 106908 transitions. Word has length 82 [2022-01-11 06:10:47,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:10:47,966 INFO L470 AbstractCegarLoop]: Abstraction has 71885 states and 106908 transitions. [2022-01-11 06:10:47,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:10:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 71885 states and 106908 transitions. [2022-01-11 06:10:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 06:10:47,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:10:47,968 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] [2022-01-11 06:10:47,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 06:10:47,968 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:10:47,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:10:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash -47528170, now seen corresponding path program 1 times [2022-01-11 06:10:47,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:10:47,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646147669] [2022-01-11 06:10:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:10:47,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:10:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:10:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:10:48,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:10:48,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646147669] [2022-01-11 06:10:48,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646147669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:10:48,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:10:48,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:10:48,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107492689] [2022-01-11 06:10:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:10:48,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:10:48,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:10:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:10:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:10:48,092 INFO L87 Difference]: Start difference. First operand 71885 states and 106908 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)