/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-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:45:02,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:45:02,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:45:02,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:45:02,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:45:02,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:45:02,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:45:02,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:45:02,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:45:02,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:45:02,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:45:02,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:45:02,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:45:02,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:45:03,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:45:03,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:45:03,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:45:03,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:45:03,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:45:03,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:45:03,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:45:03,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:45:03,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:45:03,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:45:03,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:45:03,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:45:03,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:45:03,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:45:03,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:45:03,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:45:03,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:45:03,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:45:03,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:45:03,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:45:03,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:45:03,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:45:03,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:45:03,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:45:03,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:45:03,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:45:03,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:45:03,053 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 06:45:03,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:45:03,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:45:03,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:45:03,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:45:03,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:45:03,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:45:03,068 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:45:03,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:45:03,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:45:03,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:45:03,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:45:03,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:45:03,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:45:03,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:45:03,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:45:03,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:45:03,071 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:45:03,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:45:03,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:45:03,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:45:03,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:45:03,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:45:03,218 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:45:03,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-11 06:45:03,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7002d0cbd/fed990c642d846cbab910849934a2a22/FLAG195f981e4 [2022-01-11 06:45:03,700 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:45:03,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-11 06:45:03,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7002d0cbd/fed990c642d846cbab910849934a2a22/FLAG195f981e4 [2022-01-11 06:45:04,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7002d0cbd/fed990c642d846cbab910849934a2a22 [2022-01-11 06:45:04,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:45:04,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:45:04,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:45:04,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:45:04,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:45:04,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a76b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04, skipping insertion in model container [2022-01-11 06:45:04,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:45:04,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:45:04,360 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-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15968,15981] [2022-01-11 06:45:04,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:45:04,412 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:45:04,505 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-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15968,15981] [2022-01-11 06:45:04,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:45:04,625 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:45:04,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04 WrapperNode [2022-01-11 06:45:04,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:45:04,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:45:04,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:45:04,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:45:04,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,697 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1276 [2022-01-11 06:45:04,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:45:04,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:45:04,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:45:04,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:45:04,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:45:04,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:45:04,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:45:04,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:45:04,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (1/1) ... [2022-01-11 06:45:04,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:45:04,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:45:04,779 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 06:45:04,815 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 06:45:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:45:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:45:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:45:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:45:04,951 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:45:04,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:45:05,778 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:45:05,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:45:05,791 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:45:05,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:45:05 BoogieIcfgContainer [2022-01-11 06:45:05,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:45:05,794 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:45:05,794 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:45:05,795 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:45:05,797 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:45:05" (1/1) ... [2022-01-11 06:45:06,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:45:06 BasicIcfg [2022-01-11 06:45:06,372 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:45:06,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:45:06,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:45:06,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:45:06,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:45:04" (1/4) ... [2022-01-11 06:45:06,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e7777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:45:06, skipping insertion in model container [2022-01-11 06:45:06,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:45:04" (2/4) ... [2022-01-11 06:45:06,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e7777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:45:06, skipping insertion in model container [2022-01-11 06:45:06,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:45:05" (3/4) ... [2022-01-11 06:45:06,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e7777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:45:06, skipping insertion in model container [2022-01-11 06:45:06,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:45:06" (4/4) ... [2022-01-11 06:45:06,379 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:45:06,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:45:06,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:45:06,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:45:06,430 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 06:45:06,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:45:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 337 states, 335 states have (on average 1.773134328358209) internal successors, (594), 336 states have internal predecessors, (594), 0 states have call successors, (0), 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 06:45:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-11 06:45:06,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:06,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:06,473 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1987555179, now seen corresponding path program 1 times [2022-01-11 06:45:06,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:06,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13303822] [2022-01-11 06:45:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:06,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:06,942 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 06:45:06,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:06,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13303822] [2022-01-11 06:45:06,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13303822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:06,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:06,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:06,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549194500] [2022-01-11 06:45:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:06,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:06,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:06,975 INFO L87 Difference]: Start difference. First operand has 337 states, 335 states have (on average 1.773134328358209) internal successors, (594), 336 states have internal predecessors, (594), 0 states have call successors, (0), 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 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 06:45:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:07,192 INFO L93 Difference]: Finished difference Result 962 states and 1699 transitions. [2022-01-11 06:45:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:07,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-01-11 06:45:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:07,204 INFO L225 Difference]: With dead ends: 962 [2022-01-11 06:45:07,204 INFO L226 Difference]: Without dead ends: 644 [2022-01-11 06:45:07,209 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 06:45:07,225 INFO L933 BasicCegarLoop]: 912 mSDtfsCounter, 1325 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:07,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 1453 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:45:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-01-11 06:45:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2022-01-11 06:45:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4633385335413416) internal successors, (938), 641 states have internal predecessors, (938), 0 states have call successors, (0), 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 06:45:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 938 transitions. [2022-01-11 06:45:07,307 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 938 transitions. Word has length 153 [2022-01-11 06:45:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:07,308 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 938 transitions. [2022-01-11 06:45:07,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 06:45:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 938 transitions. [2022-01-11 06:45:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-11 06:45:07,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:07,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:07,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:45:07,318 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1087915524, now seen corresponding path program 1 times [2022-01-11 06:45:07,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:07,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250848353] [2022-01-11 06:45:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:07,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:07,468 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 06:45:07,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:07,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250848353] [2022-01-11 06:45:07,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250848353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:07,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:07,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:07,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361899989] [2022-01-11 06:45:07,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:07,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:07,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:07,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:07,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:07,471 INFO L87 Difference]: Start difference. First operand 642 states and 938 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:07,511 INFO L93 Difference]: Finished difference Result 1888 states and 2750 transitions. [2022-01-11 06:45:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-01-11 06:45:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:07,517 INFO L225 Difference]: With dead ends: 1888 [2022-01-11 06:45:07,517 INFO L226 Difference]: Without dead ends: 1274 [2022-01-11 06:45:07,523 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 06:45:07,524 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 482 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1456 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 06:45:07,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 1456 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-01-11 06:45:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 644. [2022-01-11 06:45:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.4618973561430793) internal successors, (940), 643 states have internal predecessors, (940), 0 states have call successors, (0), 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 06:45:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 940 transitions. [2022-01-11 06:45:07,561 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 940 transitions. Word has length 154 [2022-01-11 06:45:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:07,562 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 940 transitions. [2022-01-11 06:45:07,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:45:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 940 transitions. [2022-01-11 06:45:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-11 06:45:07,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:07,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:07,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:45:07,566 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1306647418, now seen corresponding path program 1 times [2022-01-11 06:45:07,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:07,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731828280] [2022-01-11 06:45:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:07,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:07,789 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 06:45:07,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:07,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731828280] [2022-01-11 06:45:07,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731828280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:07,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:07,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:45:07,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442903825] [2022-01-11 06:45:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:07,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:45:07,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:07,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:45:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:45:07,792 INFO L87 Difference]: Start difference. First operand 644 states and 940 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 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 06:45:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:07,936 INFO L93 Difference]: Finished difference Result 2484 states and 3610 transitions. [2022-01-11 06:45:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2022-01-11 06:45:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:07,942 INFO L225 Difference]: With dead ends: 2484 [2022-01-11 06:45:07,942 INFO L226 Difference]: Without dead ends: 1852 [2022-01-11 06:45:07,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:45:07,948 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 1374 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:07,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 2402 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:45:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-01-11 06:45:08,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1236. [2022-01-11 06:45:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.442914979757085) internal successors, (1782), 1235 states have internal predecessors, (1782), 0 states have call successors, (0), 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 06:45:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1782 transitions. [2022-01-11 06:45:08,005 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1782 transitions. Word has length 155 [2022-01-11 06:45:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:08,006 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1782 transitions. [2022-01-11 06:45:08,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 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 06:45:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1782 transitions. [2022-01-11 06:45:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-11 06:45:08,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:08,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:08,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:45:08,008 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:08,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:08,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2051385450, now seen corresponding path program 1 times [2022-01-11 06:45:08,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:08,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872530027] [2022-01-11 06:45:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:08,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:08,161 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 06:45:08,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:08,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872530027] [2022-01-11 06:45:08,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872530027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:08,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:08,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:08,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708844679] [2022-01-11 06:45:08,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:08,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:08,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:08,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:08,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:08,164 INFO L87 Difference]: Start difference. First operand 1236 states and 1782 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 06:45:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:08,241 INFO L93 Difference]: Finished difference Result 2166 states and 3117 transitions. [2022-01-11 06:45:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2022-01-11 06:45:08,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:08,246 INFO L225 Difference]: With dead ends: 2166 [2022-01-11 06:45:08,246 INFO L226 Difference]: Without dead ends: 946 [2022-01-11 06:45:08,247 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 06:45:08,252 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 69 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1514 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 06:45:08,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1514 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-01-11 06:45:08,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2022-01-11 06:45:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 1.438095238095238) internal successors, (1359), 945 states have internal predecessors, (1359), 0 states have call successors, (0), 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 06:45:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1359 transitions. [2022-01-11 06:45:08,316 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1359 transitions. Word has length 155 [2022-01-11 06:45:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:08,316 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1359 transitions. [2022-01-11 06:45:08,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 06:45:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1359 transitions. [2022-01-11 06:45:08,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 06:45:08,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:08,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:08,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:45:08,318 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1654805086, now seen corresponding path program 1 times [2022-01-11 06:45:08,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:08,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071034890] [2022-01-11 06:45:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:08,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:08,402 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 06:45:08,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:08,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071034890] [2022-01-11 06:45:08,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071034890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:08,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:08,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:08,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912670462] [2022-01-11 06:45:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:08,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:08,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:08,405 INFO L87 Difference]: Start difference. First operand 946 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 06:45:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:08,473 INFO L93 Difference]: Finished difference Result 1877 states and 2688 transitions. [2022-01-11 06:45:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:08,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-11 06:45:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:08,477 INFO L225 Difference]: With dead ends: 1877 [2022-01-11 06:45:08,477 INFO L226 Difference]: Without dead ends: 1255 [2022-01-11 06:45:08,478 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 06:45:08,478 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 475 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1006 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 06:45:08,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1006 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:08,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-01-11 06:45:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 946. [2022-01-11 06:45:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 1.4370370370370371) internal successors, (1358), 945 states have internal predecessors, (1358), 0 states have call successors, (0), 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 06:45:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1358 transitions. [2022-01-11 06:45:08,521 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1358 transitions. Word has length 158 [2022-01-11 06:45:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:08,522 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1358 transitions. [2022-01-11 06:45:08,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 06:45:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1358 transitions. [2022-01-11 06:45:08,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 06:45:08,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:08,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:08,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:45:08,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash -691014501, now seen corresponding path program 1 times [2022-01-11 06:45:08,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:08,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037210885] [2022-01-11 06:45:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:08,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:08,642 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 06:45:08,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:08,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037210885] [2022-01-11 06:45:08,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037210885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:08,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:08,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:08,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868992780] [2022-01-11 06:45:08,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:08,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:08,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:08,644 INFO L87 Difference]: Start difference. First operand 946 states and 1358 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 06:45:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:08,713 INFO L93 Difference]: Finished difference Result 2088 states and 3081 transitions. [2022-01-11 06:45:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:08,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-11 06:45:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:08,719 INFO L225 Difference]: With dead ends: 2088 [2022-01-11 06:45:08,719 INFO L226 Difference]: Without dead ends: 1325 [2022-01-11 06:45:08,720 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 06:45:08,721 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 307 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:08,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1044 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:08,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2022-01-11 06:45:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1161. [2022-01-11 06:45:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1160 states have (on average 1.471551724137931) internal successors, (1707), 1160 states have internal predecessors, (1707), 0 states have call successors, (0), 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 06:45:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1707 transitions. [2022-01-11 06:45:08,768 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1707 transitions. Word has length 159 [2022-01-11 06:45:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:08,769 INFO L470 AbstractCegarLoop]: Abstraction has 1161 states and 1707 transitions. [2022-01-11 06:45:08,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 06:45:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1707 transitions. [2022-01-11 06:45:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 06:45:08,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:08,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:08,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:45:08,771 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash -31636399, now seen corresponding path program 1 times [2022-01-11 06:45:08,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:08,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729961573] [2022-01-11 06:45:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:08,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:08,878 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 06:45:08,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:08,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729961573] [2022-01-11 06:45:08,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729961573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:08,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:08,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:08,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850774638] [2022-01-11 06:45:08,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:08,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:08,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:08,879 INFO L87 Difference]: Start difference. First operand 1161 states and 1707 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 06:45:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:08,979 INFO L93 Difference]: Finished difference Result 3043 states and 4519 transitions. [2022-01-11 06:45:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-01-11 06:45:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:08,987 INFO L225 Difference]: With dead ends: 3043 [2022-01-11 06:45:08,987 INFO L226 Difference]: Without dead ends: 2163 [2022-01-11 06:45:08,989 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 06:45:08,990 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 410 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:08,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 1346 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:08,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2022-01-11 06:45:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2161. [2022-01-11 06:45:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 2160 states have (on average 1.461111111111111) internal successors, (3156), 2160 states have internal predecessors, (3156), 0 states have call successors, (0), 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 06:45:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 3156 transitions. [2022-01-11 06:45:09,118 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 3156 transitions. Word has length 162 [2022-01-11 06:45:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:09,118 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 3156 transitions. [2022-01-11 06:45:09,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 06:45:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 3156 transitions. [2022-01-11 06:45:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 06:45:09,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:09,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:09,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:45:09,121 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1688642640, now seen corresponding path program 1 times [2022-01-11 06:45:09,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:09,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351983445] [2022-01-11 06:45:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:09,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:09,210 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 06:45:09,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:09,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351983445] [2022-01-11 06:45:09,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351983445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:09,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:09,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:09,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483118462] [2022-01-11 06:45:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:09,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:09,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:09,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:09,211 INFO L87 Difference]: Start difference. First operand 2161 states and 3156 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 06:45:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:09,373 INFO L93 Difference]: Finished difference Result 5380 states and 7855 transitions. [2022-01-11 06:45:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:09,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-01-11 06:45:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:09,383 INFO L225 Difference]: With dead ends: 5380 [2022-01-11 06:45:09,383 INFO L226 Difference]: Without dead ends: 3307 [2022-01-11 06:45:09,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:09,386 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1314 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:09,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 1039 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2022-01-11 06:45:09,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2166. [2022-01-11 06:45:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2165 states have (on average 1.458660508083141) internal successors, (3158), 2165 states have internal predecessors, (3158), 0 states have call successors, (0), 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 06:45:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3158 transitions. [2022-01-11 06:45:09,528 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3158 transitions. Word has length 162 [2022-01-11 06:45:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:09,528 INFO L470 AbstractCegarLoop]: Abstraction has 2166 states and 3158 transitions. [2022-01-11 06:45:09,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 06:45:09,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3158 transitions. [2022-01-11 06:45:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 06:45:09,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:09,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:09,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:45:09,531 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1080430664, now seen corresponding path program 1 times [2022-01-11 06:45:09,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:09,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192255715] [2022-01-11 06:45:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:09,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:09,653 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 06:45:09,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192255715] [2022-01-11 06:45:09,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192255715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:09,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:09,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:09,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067374498] [2022-01-11 06:45:09,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:09,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:09,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:09,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:09,655 INFO L87 Difference]: Start difference. First operand 2166 states and 3158 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 06:45:09,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:09,979 INFO L93 Difference]: Finished difference Result 6211 states and 9041 transitions. [2022-01-11 06:45:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:09,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-01-11 06:45:09,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:09,991 INFO L225 Difference]: With dead ends: 6211 [2022-01-11 06:45:09,991 INFO L226 Difference]: Without dead ends: 4113 [2022-01-11 06:45:09,995 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 06:45:09,996 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 1032 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:09,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 1188 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2022-01-11 06:45:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 4111. [2022-01-11 06:45:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4111 states, 4110 states have (on average 1.445498783454988) internal successors, (5941), 4110 states have internal predecessors, (5941), 0 states have call successors, (0), 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 06:45:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 5941 transitions. [2022-01-11 06:45:10,274 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 5941 transitions. Word has length 162 [2022-01-11 06:45:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:10,275 INFO L470 AbstractCegarLoop]: Abstraction has 4111 states and 5941 transitions. [2022-01-11 06:45:10,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 06:45:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 5941 transitions. [2022-01-11 06:45:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 06:45:10,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:10,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:10,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:45:10,278 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:10,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1179448753, now seen corresponding path program 1 times [2022-01-11 06:45:10,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:10,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391943598] [2022-01-11 06:45:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:10,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:10,356 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 06:45:10,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:10,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391943598] [2022-01-11 06:45:10,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391943598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:10,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:10,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:10,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907955476] [2022-01-11 06:45:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:10,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:10,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:10,358 INFO L87 Difference]: Start difference. First operand 4111 states and 5941 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 06:45:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:10,538 INFO L93 Difference]: Finished difference Result 5998 states and 8709 transitions. [2022-01-11 06:45:10,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:10,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-11 06:45:10,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:10,547 INFO L225 Difference]: With dead ends: 5998 [2022-01-11 06:45:10,547 INFO L226 Difference]: Without dead ends: 3436 [2022-01-11 06:45:10,550 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 06:45:10,550 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 47 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1489 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 06:45:10,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1489 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:10,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2022-01-11 06:45:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3436. [2022-01-11 06:45:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3435 states have (on average 1.4457059679767104) internal successors, (4966), 3435 states have internal predecessors, (4966), 0 states have call successors, (0), 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 06:45:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 4966 transitions. [2022-01-11 06:45:10,782 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 4966 transitions. Word has length 164 [2022-01-11 06:45:10,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:10,782 INFO L470 AbstractCegarLoop]: Abstraction has 3436 states and 4966 transitions. [2022-01-11 06:45:10,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 06:45:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 4966 transitions. [2022-01-11 06:45:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 06:45:10,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:10,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:10,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:45:10,786 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:10,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1530364995, now seen corresponding path program 1 times [2022-01-11 06:45:10,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:10,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888248633] [2022-01-11 06:45:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:10,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:10,922 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 06:45:10,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:10,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888248633] [2022-01-11 06:45:10,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888248633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:10,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:10,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:45:10,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023923295] [2022-01-11 06:45:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:10,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:45:10,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:45:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:45:10,924 INFO L87 Difference]: Start difference. First operand 3436 states and 4966 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 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 06:45:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:11,345 INFO L93 Difference]: Finished difference Result 9036 states and 13025 transitions. [2022-01-11 06:45:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:11,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-11 06:45:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:11,361 INFO L225 Difference]: With dead ends: 9036 [2022-01-11 06:45:11,361 INFO L226 Difference]: Without dead ends: 5644 [2022-01-11 06:45:11,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:45:11,365 INFO L933 BasicCegarLoop]: 1067 mSDtfsCounter, 1604 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:11,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 1952 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2022-01-11 06:45:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 3601. [2022-01-11 06:45:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 3600 states have (on average 1.4322222222222223) internal successors, (5156), 3600 states have internal predecessors, (5156), 0 states have call successors, (0), 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 06:45:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5156 transitions. [2022-01-11 06:45:11,626 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5156 transitions. Word has length 164 [2022-01-11 06:45:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:11,626 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5156 transitions. [2022-01-11 06:45:11,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 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 06:45:11,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5156 transitions. [2022-01-11 06:45:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 06:45:11,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:11,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:45:11,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:45:11,631 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:11,632 INFO L85 PathProgramCache]: Analyzing trace with hash 751452839, now seen corresponding path program 1 times [2022-01-11 06:45:11,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:11,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329659224] [2022-01-11 06:45:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:11,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:11,733 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 06:45:11,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:11,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329659224] [2022-01-11 06:45:11,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329659224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:11,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:11,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:11,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602640766] [2022-01-11 06:45:11,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:11,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:11,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:11,734 INFO L87 Difference]: Start difference. First operand 3601 states and 5156 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 06:45:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:11,990 INFO L93 Difference]: Finished difference Result 6495 states and 9292 transitions. [2022-01-11 06:45:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:11,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-11 06:45:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:12,005 INFO L225 Difference]: With dead ends: 6495 [2022-01-11 06:45:12,005 INFO L226 Difference]: Without dead ends: 2930 [2022-01-11 06:45:12,009 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 06:45:12,010 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 47 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1484 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 06:45:12,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1484 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2022-01-11 06:45:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2930. [2022-01-11 06:45:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2929 states have (on average 1.4288152953226356) internal successors, (4185), 2929 states have internal predecessors, (4185), 0 states have call successors, (0), 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 06:45:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4185 transitions. [2022-01-11 06:45:12,181 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4185 transitions. Word has length 164 [2022-01-11 06:45:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:12,181 INFO L470 AbstractCegarLoop]: Abstraction has 2930 states and 4185 transitions. [2022-01-11 06:45:12,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 06:45:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4185 transitions. [2022-01-11 06:45:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-11 06:45:12,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:12,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:12,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:45:12,185 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:12,186 INFO L85 PathProgramCache]: Analyzing trace with hash 597703846, now seen corresponding path program 1 times [2022-01-11 06:45:12,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:12,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514339616] [2022-01-11 06:45:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:12,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:12,249 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 06:45:12,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:12,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514339616] [2022-01-11 06:45:12,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514339616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:12,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:12,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:12,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894488941] [2022-01-11 06:45:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:12,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:12,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:12,250 INFO L87 Difference]: Start difference. First operand 2930 states and 4185 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 06:45:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:12,448 INFO L93 Difference]: Finished difference Result 5768 states and 8263 transitions. [2022-01-11 06:45:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:12,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2022-01-11 06:45:12,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:12,455 INFO L225 Difference]: With dead ends: 5768 [2022-01-11 06:45:12,455 INFO L226 Difference]: Without dead ends: 4044 [2022-01-11 06:45:12,457 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 06:45:12,457 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 459 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1182 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 06:45:12,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1182 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2022-01-11 06:45:12,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2930. [2022-01-11 06:45:12,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2929 states have (on average 1.4277910549675656) internal successors, (4182), 2929 states have internal predecessors, (4182), 0 states have call successors, (0), 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 06:45:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4182 transitions. [2022-01-11 06:45:12,601 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4182 transitions. Word has length 167 [2022-01-11 06:45:12,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:12,602 INFO L470 AbstractCegarLoop]: Abstraction has 2930 states and 4182 transitions. [2022-01-11 06:45:12,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 06:45:12,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4182 transitions. [2022-01-11 06:45:12,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-11 06:45:12,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:12,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:12,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:45:12,605 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:12,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:12,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1639411440, now seen corresponding path program 1 times [2022-01-11 06:45:12,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:12,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009999656] [2022-01-11 06:45:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:12,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:12,698 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 06:45:12,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:12,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009999656] [2022-01-11 06:45:12,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009999656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:12,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:12,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:12,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516978637] [2022-01-11 06:45:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:12,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:12,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:12,699 INFO L87 Difference]: Start difference. First operand 2930 states and 4182 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 06:45:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:12,955 INFO L93 Difference]: Finished difference Result 6724 states and 9910 transitions. [2022-01-11 06:45:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2022-01-11 06:45:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:12,962 INFO L225 Difference]: With dead ends: 6724 [2022-01-11 06:45:12,962 INFO L226 Difference]: Without dead ends: 4325 [2022-01-11 06:45:12,964 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 06:45:12,964 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 297 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:12,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1015 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2022-01-11 06:45:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 3911. [2022-01-11 06:45:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3910 states have (on average 1.4687979539641944) internal successors, (5743), 3910 states have internal predecessors, (5743), 0 states have call successors, (0), 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 06:45:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5743 transitions. [2022-01-11 06:45:13,166 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5743 transitions. Word has length 168 [2022-01-11 06:45:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:13,166 INFO L470 AbstractCegarLoop]: Abstraction has 3911 states and 5743 transitions. [2022-01-11 06:45:13,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 06:45:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5743 transitions. [2022-01-11 06:45:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-11 06:45:13,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:13,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:13,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:45:13,169 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:13,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:13,169 INFO L85 PathProgramCache]: Analyzing trace with hash 98387093, now seen corresponding path program 1 times [2022-01-11 06:45:13,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:13,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020690296] [2022-01-11 06:45:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:13,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:13,264 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 06:45:13,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:13,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020690296] [2022-01-11 06:45:13,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020690296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:13,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:13,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:13,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525158494] [2022-01-11 06:45:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:13,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:13,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:13,266 INFO L87 Difference]: Start difference. First operand 3911 states and 5743 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 06:45:13,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:13,585 INFO L93 Difference]: Finished difference Result 9290 states and 13811 transitions. [2022-01-11 06:45:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:13,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-01-11 06:45:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:13,594 INFO L225 Difference]: With dead ends: 9290 [2022-01-11 06:45:13,594 INFO L226 Difference]: Without dead ends: 6050 [2022-01-11 06:45:13,598 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 06:45:13,599 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 392 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:13,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1306 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-01-11 06:45:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 6048. [2022-01-11 06:45:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6048 states, 6047 states have (on average 1.4564246733917645) internal successors, (8807), 6047 states have internal predecessors, (8807), 0 states have call successors, (0), 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 06:45:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6048 states to 6048 states and 8807 transitions. [2022-01-11 06:45:13,992 INFO L78 Accepts]: Start accepts. Automaton has 6048 states and 8807 transitions. Word has length 171 [2022-01-11 06:45:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:13,993 INFO L470 AbstractCegarLoop]: Abstraction has 6048 states and 8807 transitions. [2022-01-11 06:45:13,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 06:45:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 6048 states and 8807 transitions. [2022-01-11 06:45:13,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-11 06:45:13,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:13,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:13,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:45:13,997 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:13,997 INFO L85 PathProgramCache]: Analyzing trace with hash -678699665, now seen corresponding path program 1 times [2022-01-11 06:45:13,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:13,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310476194] [2022-01-11 06:45:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:13,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:14,125 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 06:45:14,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:14,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310476194] [2022-01-11 06:45:14,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310476194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:14,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:14,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:14,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633935950] [2022-01-11 06:45:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:14,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:14,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:14,128 INFO L87 Difference]: Start difference. First operand 6048 states and 8807 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 06:45:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:14,702 INFO L93 Difference]: Finished difference Result 14385 states and 21149 transitions. [2022-01-11 06:45:14,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:14,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-01-11 06:45:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:14,714 INFO L225 Difference]: With dead ends: 14385 [2022-01-11 06:45:14,714 INFO L226 Difference]: Without dead ends: 9311 [2022-01-11 06:45:14,718 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 06:45:14,719 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 399 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:14,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 1290 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9311 states. [2022-01-11 06:45:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9311 to 9309. [2022-01-11 06:45:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9309 states, 9308 states have (on average 1.4411259131929524) internal successors, (13414), 9308 states have internal predecessors, (13414), 0 states have call successors, (0), 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 06:45:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9309 states to 9309 states and 13414 transitions. [2022-01-11 06:45:15,205 INFO L78 Accepts]: Start accepts. Automaton has 9309 states and 13414 transitions. Word has length 171 [2022-01-11 06:45:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:15,206 INFO L470 AbstractCegarLoop]: Abstraction has 9309 states and 13414 transitions. [2022-01-11 06:45:15,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 06:45:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 9309 states and 13414 transitions. [2022-01-11 06:45:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 06:45:15,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:15,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:15,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:45:15,211 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1731052437, now seen corresponding path program 1 times [2022-01-11 06:45:15,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:15,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833012774] [2022-01-11 06:45:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:15,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:15,379 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 06:45:15,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:15,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833012774] [2022-01-11 06:45:15,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833012774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:15,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:15,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:15,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297793516] [2022-01-11 06:45:15,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:15,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:15,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:15,380 INFO L87 Difference]: Start difference. First operand 9309 states and 13414 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 06:45:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:16,136 INFO L93 Difference]: Finished difference Result 21105 states and 31070 transitions. [2022-01-11 06:45:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-11 06:45:16,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:16,163 INFO L225 Difference]: With dead ends: 21105 [2022-01-11 06:45:16,163 INFO L226 Difference]: Without dead ends: 14000 [2022-01-11 06:45:16,172 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 06:45:16,172 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 289 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:16,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 994 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14000 states. [2022-01-11 06:45:17,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14000 to 13042. [2022-01-11 06:45:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13042 states, 13041 states have (on average 1.4735066329269229) internal successors, (19216), 13041 states have internal predecessors, (19216), 0 states have call successors, (0), 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 06:45:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13042 states to 13042 states and 19216 transitions. [2022-01-11 06:45:17,130 INFO L78 Accepts]: Start accepts. Automaton has 13042 states and 19216 transitions. Word has length 175 [2022-01-11 06:45:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:17,130 INFO L470 AbstractCegarLoop]: Abstraction has 13042 states and 19216 transitions. [2022-01-11 06:45:17,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 06:45:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 13042 states and 19216 transitions. [2022-01-11 06:45:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 06:45:17,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:17,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:17,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:45:17,137 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1823700801, now seen corresponding path program 1 times [2022-01-11 06:45:17,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:17,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106584611] [2022-01-11 06:45:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:17,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:17,300 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 06:45:17,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106584611] [2022-01-11 06:45:17,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106584611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:17,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:17,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:17,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119549947] [2022-01-11 06:45:17,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:17,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:17,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:17,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:17,302 INFO L87 Difference]: Start difference. First operand 13042 states and 19216 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 06:45:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:18,332 INFO L93 Difference]: Finished difference Result 26090 states and 38443 transitions. [2022-01-11 06:45:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:18,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 06:45:18,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:18,349 INFO L225 Difference]: With dead ends: 26090 [2022-01-11 06:45:18,350 INFO L226 Difference]: Without dead ends: 13207 [2022-01-11 06:45:18,362 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 06:45:18,362 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 931 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:18,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 1209 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13207 states. [2022-01-11 06:45:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13207 to 13145. [2022-01-11 06:45:19,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13145 states, 13144 states have (on average 1.4702525867315885) internal successors, (19325), 13144 states have internal predecessors, (19325), 0 states have call successors, (0), 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 06:45:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 19325 transitions. [2022-01-11 06:45:19,236 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 19325 transitions. Word has length 176 [2022-01-11 06:45:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:19,236 INFO L470 AbstractCegarLoop]: Abstraction has 13145 states and 19325 transitions. [2022-01-11 06:45:19,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 06:45:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 19325 transitions. [2022-01-11 06:45:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-11 06:45:19,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:19,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:19,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:45:19,244 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -234830498, now seen corresponding path program 1 times [2022-01-11 06:45:19,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:19,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022648630] [2022-01-11 06:45:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:19,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:19,306 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 06:45:19,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:19,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022648630] [2022-01-11 06:45:19,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022648630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:19,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:19,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:45:19,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416707630] [2022-01-11 06:45:19,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:19,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:45:19,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:19,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:45:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:45:19,308 INFO L87 Difference]: Start difference. First operand 13145 states and 19325 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 06:45:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:20,920 INFO L93 Difference]: Finished difference Result 35470 states and 52344 transitions. [2022-01-11 06:45:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:45:20,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2022-01-11 06:45:20,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:20,962 INFO L225 Difference]: With dead ends: 35470 [2022-01-11 06:45:20,962 INFO L226 Difference]: Without dead ends: 26078 [2022-01-11 06:45:20,973 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 06:45:20,974 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 448 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1079 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 06:45:20,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 1079 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:20,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26078 states. [2022-01-11 06:45:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26078 to 13155. [2022-01-11 06:45:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13155 states, 13154 states have (on average 1.469895088946328) internal successors, (19335), 13154 states have internal predecessors, (19335), 0 states have call successors, (0), 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 06:45:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13155 states to 13155 states and 19335 transitions. [2022-01-11 06:45:21,897 INFO L78 Accepts]: Start accepts. Automaton has 13155 states and 19335 transitions. Word has length 177 [2022-01-11 06:45:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:21,897 INFO L470 AbstractCegarLoop]: Abstraction has 13155 states and 19335 transitions. [2022-01-11 06:45:21,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 06:45:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 13155 states and 19335 transitions. [2022-01-11 06:45:21,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 06:45:21,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:21,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:21,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:45:21,903 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:21,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1420263394, now seen corresponding path program 1 times [2022-01-11 06:45:21,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:21,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855206075] [2022-01-11 06:45:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:21,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:21,987 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 06:45:21,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:21,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855206075] [2022-01-11 06:45:21,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855206075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:21,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:21,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:21,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302866992] [2022-01-11 06:45:21,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:21,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:21,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:21,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:21,989 INFO L87 Difference]: Start difference. First operand 13155 states and 19335 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 06:45:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:23,031 INFO L93 Difference]: Finished difference Result 22989 states and 33775 transitions. [2022-01-11 06:45:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:45:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 06:45:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:23,067 INFO L225 Difference]: With dead ends: 22989 [2022-01-11 06:45:23,067 INFO L226 Difference]: Without dead ends: 13145 [2022-01-11 06:45:23,093 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 06:45:23,093 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 23 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1447 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 06:45:23,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1447 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13145 states. [2022-01-11 06:45:23,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13145 to 13145. [2022-01-11 06:45:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13145 states, 13144 states have (on average 1.469872185027389) internal successors, (19320), 13144 states have internal predecessors, (19320), 0 states have call successors, (0), 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 06:45:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 19320 transitions. [2022-01-11 06:45:24,016 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 19320 transitions. Word has length 178 [2022-01-11 06:45:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:24,016 INFO L470 AbstractCegarLoop]: Abstraction has 13145 states and 19320 transitions. [2022-01-11 06:45:24,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 06:45:24,017 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 19320 transitions. [2022-01-11 06:45:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 06:45:24,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:24,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:24,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:45:24,022 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:24,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:24,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1111846586, now seen corresponding path program 1 times [2022-01-11 06:45:24,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:24,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518709044] [2022-01-11 06:45:24,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:24,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:24,151 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 06:45:24,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:24,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518709044] [2022-01-11 06:45:24,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518709044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:24,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:24,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:45:24,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493578877] [2022-01-11 06:45:24,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:24,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:45:24,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:45:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:45:24,154 INFO L87 Difference]: Start difference. First operand 13145 states and 19320 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 06:45:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:25,431 INFO L93 Difference]: Finished difference Result 29778 states and 43778 transitions. [2022-01-11 06:45:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:25,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 06:45:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:25,454 INFO L225 Difference]: With dead ends: 29778 [2022-01-11 06:45:25,454 INFO L226 Difference]: Without dead ends: 17642 [2022-01-11 06:45:25,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:45:25,463 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 1294 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:25,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1294 Valid, 2072 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17642 states. [2022-01-11 06:45:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17642 to 12132. [2022-01-11 06:45:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12132 states, 12131 states have (on average 1.4652543071469788) internal successors, (17775), 12131 states have internal predecessors, (17775), 0 states have call successors, (0), 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 06:45:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12132 states to 12132 states and 17775 transitions. [2022-01-11 06:45:26,378 INFO L78 Accepts]: Start accepts. Automaton has 12132 states and 17775 transitions. Word has length 178 [2022-01-11 06:45:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:26,378 INFO L470 AbstractCegarLoop]: Abstraction has 12132 states and 17775 transitions. [2022-01-11 06:45:26,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 06:45:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12132 states and 17775 transitions. [2022-01-11 06:45:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 06:45:26,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:26,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:26,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:45:26,384 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1246372660, now seen corresponding path program 1 times [2022-01-11 06:45:26,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:26,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973364332] [2022-01-11 06:45:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:26,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:26,505 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 06:45:26,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:26,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973364332] [2022-01-11 06:45:26,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973364332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:26,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:26,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:26,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767979504] [2022-01-11 06:45:26,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:26,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:26,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:26,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:26,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:26,506 INFO L87 Difference]: Start difference. First operand 12132 states and 17775 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 06:45:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:28,248 INFO L93 Difference]: Finished difference Result 33882 states and 50689 transitions. [2022-01-11 06:45:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2022-01-11 06:45:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:28,280 INFO L225 Difference]: With dead ends: 33882 [2022-01-11 06:45:28,281 INFO L226 Difference]: Without dead ends: 24063 [2022-01-11 06:45:28,295 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 06:45:28,296 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 733 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:28,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 2207 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24063 states. [2022-01-11 06:45:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24063 to 12714. [2022-01-11 06:45:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12714 states, 12713 states have (on average 1.451034374262566) internal successors, (18447), 12713 states have internal predecessors, (18447), 0 states have call successors, (0), 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 06:45:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12714 states to 12714 states and 18447 transitions. [2022-01-11 06:45:29,364 INFO L78 Accepts]: Start accepts. Automaton has 12714 states and 18447 transitions. Word has length 180 [2022-01-11 06:45:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:29,364 INFO L470 AbstractCegarLoop]: Abstraction has 12714 states and 18447 transitions. [2022-01-11 06:45:29,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 06:45:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 12714 states and 18447 transitions. [2022-01-11 06:45:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 06:45:29,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:29,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:29,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:45:29,370 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:29,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1880398381, now seen corresponding path program 1 times [2022-01-11 06:45:29,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:29,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189136361] [2022-01-11 06:45:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:29,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:29,510 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 06:45:29,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:29,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189136361] [2022-01-11 06:45:29,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189136361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:29,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:29,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:29,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697622182] [2022-01-11 06:45:29,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:29,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:29,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:29,512 INFO L87 Difference]: Start difference. First operand 12714 states and 18447 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 06:45:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:31,404 INFO L93 Difference]: Finished difference Result 34484 states and 51267 transitions. [2022-01-11 06:45:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:31,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2022-01-11 06:45:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:31,438 INFO L225 Difference]: With dead ends: 34484 [2022-01-11 06:45:31,438 INFO L226 Difference]: Without dead ends: 24906 [2022-01-11 06:45:31,451 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 06:45:31,458 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 723 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:31,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 2151 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24906 states. [2022-01-11 06:45:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24906 to 13887. [2022-01-11 06:45:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13887 states, 13886 states have (on average 1.4274089010514186) internal successors, (19821), 13886 states have internal predecessors, (19821), 0 states have call successors, (0), 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 06:45:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13887 states to 13887 states and 19821 transitions. [2022-01-11 06:45:32,653 INFO L78 Accepts]: Start accepts. Automaton has 13887 states and 19821 transitions. Word has length 180 [2022-01-11 06:45:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:32,660 INFO L470 AbstractCegarLoop]: Abstraction has 13887 states and 19821 transitions. [2022-01-11 06:45:32,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 06:45:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13887 states and 19821 transitions. [2022-01-11 06:45:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 06:45:32,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:32,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:32,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:45:32,668 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:32,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1885649876, now seen corresponding path program 1 times [2022-01-11 06:45:32,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:32,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477475757] [2022-01-11 06:45:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:32,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:32,843 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 06:45:32,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:32,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477475757] [2022-01-11 06:45:32,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477475757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:32,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:32,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:45:32,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834545020] [2022-01-11 06:45:32,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:32,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:45:32,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:32,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:45:32,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:45:32,846 INFO L87 Difference]: Start difference. First operand 13887 states and 19821 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 06:45:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:45:34,921 INFO L93 Difference]: Finished difference Result 36036 states and 52945 transitions. [2022-01-11 06:45:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:45:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2022-01-11 06:45:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:45:34,957 INFO L225 Difference]: With dead ends: 36036 [2022-01-11 06:45:34,958 INFO L226 Difference]: Without dead ends: 26699 [2022-01-11 06:45:34,972 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 06:45:34,972 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 719 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:45:34,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 2095 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:45:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26699 states. [2022-01-11 06:45:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26699 to 16010. [2022-01-11 06:45:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16010 states, 16009 states have (on average 1.3926541320507215) internal successors, (22295), 16009 states have internal predecessors, (22295), 0 states have call successors, (0), 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 06:45:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16010 states to 16010 states and 22295 transitions. [2022-01-11 06:45:36,325 INFO L78 Accepts]: Start accepts. Automaton has 16010 states and 22295 transitions. Word has length 180 [2022-01-11 06:45:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:45:36,325 INFO L470 AbstractCegarLoop]: Abstraction has 16010 states and 22295 transitions. [2022-01-11 06:45:36,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 06:45:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 16010 states and 22295 transitions. [2022-01-11 06:45:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 06:45:36,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:45:36,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:36,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:45:36,335 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:45:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:45:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1965705997, now seen corresponding path program 1 times [2022-01-11 06:45:36,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:45:36,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934023676] [2022-01-11 06:45:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:45:36,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:45:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:45:37,398 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 06:45:37,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:45:37,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934023676] [2022-01-11 06:45:37,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934023676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:45:37,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:45:37,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-11 06:45:37,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376059122] [2022-01-11 06:45:37,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:45:37,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 06:45:37,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:45:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 06:45:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-01-11 06:45:37,399 INFO L87 Difference]: Start difference. First operand 16010 states and 22295 transitions. Second operand has 15 states, 15 states have (on average 12.0) internal successors, (180), 14 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)