/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:38:29,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:38:29,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:38:29,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:38:29,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:38:29,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:38:29,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:38:29,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:38:29,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:38:29,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:38:29,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:38:29,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:38:29,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:38:29,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:38:29,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:38:29,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:38:29,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:38:29,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:38:29,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:38:29,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:38:29,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:38:29,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:38:29,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:38:29,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:38:29,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:38:29,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:38:29,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:38:29,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:38:29,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:38:29,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:38:29,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:38:29,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:38:29,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:38:29,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:38:29,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:38:29,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:38:29,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:38:29,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:38:29,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:38:29,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:38:29,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:38:29,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:38:29,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:38:29,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:38:29,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:38:29,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:38:29,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:38:29,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:38:29,785 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:38:29,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:38:29,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:38:29,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:38:29,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:38:29,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:38:29,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:38:29,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:38:29,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:38:29,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:38:29,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:38:29,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:38:29,788 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:38:29,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:38:29,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:38:29,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:38:29,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:38:29,789 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:38:29,789 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:38:29,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:38:30,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:38:30,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:38:30,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:38:30,009 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:38:30,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-11 00:38:30,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5858b1792/cd40bad348394513a634c86dbdadd8ef/FLAGac52d0663 [2022-01-11 00:38:30,536 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:38:30,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-01-11 00:38:30,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5858b1792/cd40bad348394513a634c86dbdadd8ef/FLAGac52d0663 [2022-01-11 00:38:30,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5858b1792/cd40bad348394513a634c86dbdadd8ef [2022-01-11 00:38:30,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:38:30,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:38:30,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:38:30,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:38:30,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:38:30,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:38:30" (1/1) ... [2022-01-11 00:38:30,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f849f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:30, skipping insertion in model container [2022-01-11 00:38:30,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:38:30" (1/1) ... [2022-01-11 00:38:30,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:38:30,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:38:31,333 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24323,24336] [2022-01-11 00:38:31,366 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28161,28174] [2022-01-11 00:38:31,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:38:31,478 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:38:31,712 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24323,24336] [2022-01-11 00:38:31,740 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28161,28174] [2022-01-11 00:38:31,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:38:31,844 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:38:31,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31 WrapperNode [2022-01-11 00:38:31,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:38:31,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:38:31,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:38:31,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:38:31,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:31,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:31,958 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2360 [2022-01-11 00:38:31,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:38:31,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:38:31,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:38:31,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:38:31,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:31,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:31,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:31,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:31,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:32,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:32,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:32,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:38:32,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:38:32,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:38:32,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:38:32,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (1/1) ... [2022-01-11 00:38:32,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:38:32,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:38:32,073 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 00:38:32,100 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 00:38:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:38:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:38:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:38:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:38:32,318 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:38:32,319 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:38:33,712 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:38:33,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:38:33,728 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:38:33,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:38:33 BoogieIcfgContainer [2022-01-11 00:38:33,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:38:33,734 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:38:33,734 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:38:33,735 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:38:33,737 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:38:33" (1/1) ... [2022-01-11 00:38:34,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:38:34 BasicIcfg [2022-01-11 00:38:34,730 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:38:34,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:38:34,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:38:34,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:38:34,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:38:30" (1/4) ... [2022-01-11 00:38:34,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280a9f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:38:34, skipping insertion in model container [2022-01-11 00:38:34,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:38:31" (2/4) ... [2022-01-11 00:38:34,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280a9f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:38:34, skipping insertion in model container [2022-01-11 00:38:34,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:38:33" (3/4) ... [2022-01-11 00:38:34,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280a9f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:38:34, skipping insertion in model container [2022-01-11 00:38:34,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:38:34" (4/4) ... [2022-01-11 00:38:34,739 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.cTransformedIcfg [2022-01-11 00:38:34,746 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:38:34,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:38:34,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:38:34,805 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 00:38:34,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:38:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 627 states, 624 states have (on average 1.8028846153846154) internal successors, (1125), 626 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-11 00:38:34,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:34,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:34,869 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:34,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash -369824705, now seen corresponding path program 1 times [2022-01-11 00:38:34,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:34,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966535247] [2022-01-11 00:38:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:34,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:35,695 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 00:38:35,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:35,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966535247] [2022-01-11 00:38:35,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966535247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:35,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:35,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:38:35,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623966688] [2022-01-11 00:38:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:35,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:38:35,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:38:35,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:35,756 INFO L87 Difference]: Start difference. First operand has 627 states, 624 states have (on average 1.8028846153846154) internal successors, (1125), 626 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 00:38:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:36,018 INFO L93 Difference]: Finished difference Result 1809 states and 3248 transitions. [2022-01-11 00:38:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:38:36,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-01-11 00:38:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:36,037 INFO L225 Difference]: With dead ends: 1809 [2022-01-11 00:38:36,037 INFO L226 Difference]: Without dead ends: 1223 [2022-01-11 00:38:36,042 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 00:38:36,045 INFO L933 BasicCegarLoop]: 1820 mSDtfsCounter, 2462 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:36,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2462 Valid, 2883 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:38:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-11 00:38:36,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1188. [2022-01-11 00:38:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1186 states have (on average 1.5581787521079258) internal successors, (1848), 1187 states have internal predecessors, (1848), 0 states have call successors, (0), 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 00:38:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1848 transitions. [2022-01-11 00:38:36,142 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1848 transitions. Word has length 235 [2022-01-11 00:38:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:36,143 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1848 transitions. [2022-01-11 00:38:36,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 00:38:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1848 transitions. [2022-01-11 00:38:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-11 00:38:36,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:36,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:36,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:38:36,148 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:36,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1823015268, now seen corresponding path program 1 times [2022-01-11 00:38:36,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:36,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923548558] [2022-01-11 00:38:36,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:36,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:36,425 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 00:38:36,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923548558] [2022-01-11 00:38:36,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923548558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:36,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:36,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:38:36,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660653433] [2022-01-11 00:38:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:36,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:38:36,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:38:36,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:38:36,435 INFO L87 Difference]: Start difference. First operand 1188 states and 1848 transitions. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 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 00:38:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:36,747 INFO L93 Difference]: Finished difference Result 4640 states and 7197 transitions. [2022-01-11 00:38:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:38:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2022-01-11 00:38:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:36,766 INFO L225 Difference]: With dead ends: 4640 [2022-01-11 00:38:36,766 INFO L226 Difference]: Without dead ends: 3464 [2022-01-11 00:38:36,769 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 00:38:36,771 INFO L933 BasicCegarLoop]: 2070 mSDtfsCounter, 2728 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2728 SdHoareTripleChecker+Valid, 4799 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:36,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2728 Valid, 4799 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:38:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-01-11 00:38:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2303. [2022-01-11 00:38:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2301 states have (on average 1.5467188179052587) internal successors, (3559), 2302 states have internal predecessors, (3559), 0 states have call successors, (0), 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 00:38:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3559 transitions. [2022-01-11 00:38:36,961 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3559 transitions. Word has length 237 [2022-01-11 00:38:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:36,963 INFO L470 AbstractCegarLoop]: Abstraction has 2303 states and 3559 transitions. [2022-01-11 00:38:36,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 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 00:38:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3559 transitions. [2022-01-11 00:38:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-11 00:38:36,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:36,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:36,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:38:36,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1458341295, now seen corresponding path program 1 times [2022-01-11 00:38:36,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:36,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25445970] [2022-01-11 00:38:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:36,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:37,128 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 00:38:37,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:37,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25445970] [2022-01-11 00:38:37,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25445970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:37,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:37,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:38:37,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761028412] [2022-01-11 00:38:37,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:37,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:38:37,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:37,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:38:37,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:37,132 INFO L87 Difference]: Start difference. First operand 2303 states and 3559 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 00:38:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:37,391 INFO L93 Difference]: Finished difference Result 6852 states and 10579 transitions. [2022-01-11 00:38:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:38:37,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2022-01-11 00:38:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:37,407 INFO L225 Difference]: With dead ends: 6852 [2022-01-11 00:38:37,408 INFO L226 Difference]: Without dead ends: 4578 [2022-01-11 00:38:37,415 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 00:38:37,419 INFO L933 BasicCegarLoop]: 1924 mSDtfsCounter, 953 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:37,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 2884 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:37,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2022-01-11 00:38:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 2317. [2022-01-11 00:38:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2315 states have (on average 1.544708423326134) internal successors, (3576), 2316 states have internal predecessors, (3576), 0 states have call successors, (0), 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 00:38:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3576 transitions. [2022-01-11 00:38:37,565 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3576 transitions. Word has length 239 [2022-01-11 00:38:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:37,566 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 3576 transitions. [2022-01-11 00:38:37,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 00:38:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3576 transitions. [2022-01-11 00:38:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-11 00:38:37,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:37,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:37,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:38:37,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1680040766, now seen corresponding path program 1 times [2022-01-11 00:38:37,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:37,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660244463] [2022-01-11 00:38:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:37,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:37,873 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 00:38:37,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:37,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660244463] [2022-01-11 00:38:37,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660244463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:37,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:37,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:38:37,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753219029] [2022-01-11 00:38:37,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:37,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:38:37,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:38:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:38:37,876 INFO L87 Difference]: Start difference. First operand 2317 states and 3576 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 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 00:38:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:38,488 INFO L93 Difference]: Finished difference Result 8990 states and 13845 transitions. [2022-01-11 00:38:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:38:38,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2022-01-11 00:38:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:38,519 INFO L225 Difference]: With dead ends: 8990 [2022-01-11 00:38:38,519 INFO L226 Difference]: Without dead ends: 6714 [2022-01-11 00:38:38,525 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 00:38:38,525 INFO L933 BasicCegarLoop]: 2050 mSDtfsCounter, 3366 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:38,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3366 Valid, 3853 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:38:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2022-01-11 00:38:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 4508. [2022-01-11 00:38:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 4506 states have (on average 1.5339547270306257) internal successors, (6912), 4507 states have internal predecessors, (6912), 0 states have call successors, (0), 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 00:38:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 6912 transitions. [2022-01-11 00:38:38,930 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 6912 transitions. Word has length 241 [2022-01-11 00:38:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:38,931 INFO L470 AbstractCegarLoop]: Abstraction has 4508 states and 6912 transitions. [2022-01-11 00:38:38,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 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 00:38:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 6912 transitions. [2022-01-11 00:38:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-11 00:38:38,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:38,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:38,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:38:38,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:38,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1680859128, now seen corresponding path program 1 times [2022-01-11 00:38:38,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:38,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750411756] [2022-01-11 00:38:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:38,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:39,084 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 00:38:39,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:39,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750411756] [2022-01-11 00:38:39,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750411756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:39,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:39,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:38:39,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143406498] [2022-01-11 00:38:39,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:39,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:38:39,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:38:39,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:39,087 INFO L87 Difference]: Start difference. First operand 4508 states and 6912 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 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 00:38:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:40,025 INFO L93 Difference]: Finished difference Result 15877 states and 24080 transitions. [2022-01-11 00:38:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:38:40,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2022-01-11 00:38:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:40,083 INFO L225 Difference]: With dead ends: 15877 [2022-01-11 00:38:40,083 INFO L226 Difference]: Without dead ends: 11913 [2022-01-11 00:38:40,095 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 00:38:40,096 INFO L933 BasicCegarLoop]: 1636 mSDtfsCounter, 2523 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 4378 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:40,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 4378 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:40,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11913 states. [2022-01-11 00:38:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11913 to 4969. [2022-01-11 00:38:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4969 states, 4967 states have (on average 1.5482182403865512) internal successors, (7690), 4968 states have internal predecessors, (7690), 0 states have call successors, (0), 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 00:38:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 7690 transitions. [2022-01-11 00:38:40,659 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 7690 transitions. Word has length 241 [2022-01-11 00:38:40,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:40,662 INFO L470 AbstractCegarLoop]: Abstraction has 4969 states and 7690 transitions. [2022-01-11 00:38:40,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 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 00:38:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 7690 transitions. [2022-01-11 00:38:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-11 00:38:40,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:40,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:40,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:38:40,675 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1195819105, now seen corresponding path program 1 times [2022-01-11 00:38:40,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:40,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64026936] [2022-01-11 00:38:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:40,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:40,827 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 00:38:40,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:40,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64026936] [2022-01-11 00:38:40,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64026936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:40,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:40,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:38:40,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404284520] [2022-01-11 00:38:40,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:40,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:38:40,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:38:40,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:40,830 INFO L87 Difference]: Start difference. First operand 4969 states and 7690 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 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 00:38:41,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:41,982 INFO L93 Difference]: Finished difference Result 16722 states and 25489 transitions. [2022-01-11 00:38:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:38:41,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2022-01-11 00:38:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:42,010 INFO L225 Difference]: With dead ends: 16722 [2022-01-11 00:38:42,011 INFO L226 Difference]: Without dead ends: 12726 [2022-01-11 00:38:42,019 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 00:38:42,020 INFO L933 BasicCegarLoop]: 1819 mSDtfsCounter, 2328 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:42,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 4563 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:42,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12726 states. [2022-01-11 00:38:42,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12726 to 5769. [2022-01-11 00:38:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5767 states have (on average 1.568406450494191) internal successors, (9045), 5768 states have internal predecessors, (9045), 0 states have call successors, (0), 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 00:38:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 9045 transitions. [2022-01-11 00:38:42,627 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 9045 transitions. Word has length 243 [2022-01-11 00:38:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:42,627 INFO L470 AbstractCegarLoop]: Abstraction has 5769 states and 9045 transitions. [2022-01-11 00:38:42,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 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 00:38:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 9045 transitions. [2022-01-11 00:38:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-11 00:38:42,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:42,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:42,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:38:42,641 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash -891702358, now seen corresponding path program 1 times [2022-01-11 00:38:42,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:42,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927955720] [2022-01-11 00:38:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:42,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:42,782 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 00:38:42,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:42,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927955720] [2022-01-11 00:38:42,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927955720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:42,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:42,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:38:42,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042768308] [2022-01-11 00:38:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:42,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:38:42,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:38:42,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:42,784 INFO L87 Difference]: Start difference. First operand 5769 states and 9045 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 00:38:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:43,546 INFO L93 Difference]: Finished difference Result 13635 states and 20796 transitions. [2022-01-11 00:38:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:38:43,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2022-01-11 00:38:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:43,568 INFO L225 Difference]: With dead ends: 13635 [2022-01-11 00:38:43,568 INFO L226 Difference]: Without dead ends: 9727 [2022-01-11 00:38:43,577 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 00:38:43,578 INFO L933 BasicCegarLoop]: 1789 mSDtfsCounter, 818 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:43,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 2748 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9727 states. [2022-01-11 00:38:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9727 to 5859. [2022-01-11 00:38:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5857 states have (on average 1.5608673382277616) internal successors, (9142), 5858 states have internal predecessors, (9142), 0 states have call successors, (0), 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 00:38:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 9142 transitions. [2022-01-11 00:38:44,105 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 9142 transitions. Word has length 245 [2022-01-11 00:38:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:44,105 INFO L470 AbstractCegarLoop]: Abstraction has 5859 states and 9142 transitions. [2022-01-11 00:38:44,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 00:38:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 9142 transitions. [2022-01-11 00:38:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-11 00:38:44,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:44,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:44,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:38:44,117 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash 375575431, now seen corresponding path program 1 times [2022-01-11 00:38:44,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:44,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440894236] [2022-01-11 00:38:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:44,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:44,344 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 00:38:44,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:44,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440894236] [2022-01-11 00:38:44,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440894236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:44,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:44,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:38:44,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384998326] [2022-01-11 00:38:44,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:44,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:38:44,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:38:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:44,346 INFO L87 Difference]: Start difference. First operand 5859 states and 9142 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 00:38:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:45,209 INFO L93 Difference]: Finished difference Result 14336 states and 21842 transitions. [2022-01-11 00:38:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:38:45,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2022-01-11 00:38:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:45,237 INFO L225 Difference]: With dead ends: 14336 [2022-01-11 00:38:45,238 INFO L226 Difference]: Without dead ends: 10287 [2022-01-11 00:38:45,245 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 00:38:45,246 INFO L933 BasicCegarLoop]: 1853 mSDtfsCounter, 829 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:45,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 2778 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:38:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2022-01-11 00:38:46,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 10257. [2022-01-11 00:38:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10257 states, 10255 states have (on average 1.5301803998049732) internal successors, (15692), 10256 states have internal predecessors, (15692), 0 states have call successors, (0), 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 00:38:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10257 states to 10257 states and 15692 transitions. [2022-01-11 00:38:46,062 INFO L78 Accepts]: Start accepts. Automaton has 10257 states and 15692 transitions. Word has length 247 [2022-01-11 00:38:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:46,062 INFO L470 AbstractCegarLoop]: Abstraction has 10257 states and 15692 transitions. [2022-01-11 00:38:46,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 00:38:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10257 states and 15692 transitions. [2022-01-11 00:38:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-11 00:38:46,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:46,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:46,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:38:46,079 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash -920966215, now seen corresponding path program 1 times [2022-01-11 00:38:46,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:46,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389275732] [2022-01-11 00:38:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:46,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:46,206 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 00:38:46,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:46,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389275732] [2022-01-11 00:38:46,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389275732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:46,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:46,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:38:46,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147704047] [2022-01-11 00:38:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:46,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:38:46,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:38:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:46,209 INFO L87 Difference]: Start difference. First operand 10257 states and 15692 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 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 00:38:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:47,884 INFO L93 Difference]: Finished difference Result 33263 states and 50134 transitions. [2022-01-11 00:38:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:38:47,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2022-01-11 00:38:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:47,943 INFO L225 Difference]: With dead ends: 33263 [2022-01-11 00:38:47,943 INFO L226 Difference]: Without dead ends: 25377 [2022-01-11 00:38:47,962 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 00:38:47,962 INFO L933 BasicCegarLoop]: 1973 mSDtfsCounter, 2293 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:47,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2293 Valid, 4714 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25377 states. [2022-01-11 00:38:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25377 to 11687. [2022-01-11 00:38:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11687 states, 11685 states have (on average 1.5484809584937955) internal successors, (18094), 11686 states have internal predecessors, (18094), 0 states have call successors, (0), 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 00:38:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11687 states to 11687 states and 18094 transitions. [2022-01-11 00:38:48,830 INFO L78 Accepts]: Start accepts. Automaton has 11687 states and 18094 transitions. Word has length 247 [2022-01-11 00:38:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:48,830 INFO L470 AbstractCegarLoop]: Abstraction has 11687 states and 18094 transitions. [2022-01-11 00:38:48,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 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 00:38:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 11687 states and 18094 transitions. [2022-01-11 00:38:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-11 00:38:48,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:48,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:48,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:38:48,851 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:48,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash 461760435, now seen corresponding path program 1 times [2022-01-11 00:38:48,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:48,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654311002] [2022-01-11 00:38:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:48,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:49,097 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 00:38:49,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:49,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654311002] [2022-01-11 00:38:49,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654311002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:49,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:49,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:38:49,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135430375] [2022-01-11 00:38:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:49,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:38:49,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:38:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:49,100 INFO L87 Difference]: Start difference. First operand 11687 states and 18094 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 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 00:38:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:49,987 INFO L93 Difference]: Finished difference Result 18689 states and 28440 transitions. [2022-01-11 00:38:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:38:49,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2022-01-11 00:38:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:50,006 INFO L225 Difference]: With dead ends: 18689 [2022-01-11 00:38:50,007 INFO L226 Difference]: Without dead ends: 10302 [2022-01-11 00:38:50,021 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 00:38:50,022 INFO L933 BasicCegarLoop]: 1104 mSDtfsCounter, 219 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:50,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 3044 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10302 states. [2022-01-11 00:38:50,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10302 to 10302. [2022-01-11 00:38:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10302 states, 10300 states have (on average 1.5423300970873786) internal successors, (15886), 10301 states have internal predecessors, (15886), 0 states have call successors, (0), 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 00:38:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10302 states to 10302 states and 15886 transitions. [2022-01-11 00:38:50,816 INFO L78 Accepts]: Start accepts. Automaton has 10302 states and 15886 transitions. Word has length 247 [2022-01-11 00:38:50,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:50,816 INFO L470 AbstractCegarLoop]: Abstraction has 10302 states and 15886 transitions. [2022-01-11 00:38:50,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 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 00:38:50,816 INFO L276 IsEmpty]: Start isEmpty. Operand 10302 states and 15886 transitions. [2022-01-11 00:38:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-01-11 00:38:50,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:50,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:50,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:38:50,835 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1368796174, now seen corresponding path program 1 times [2022-01-11 00:38:50,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:50,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417202410] [2022-01-11 00:38:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:50,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:51,041 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 00:38:51,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:51,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417202410] [2022-01-11 00:38:51,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417202410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:51,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:51,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:38:51,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147589600] [2022-01-11 00:38:51,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:51,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:38:51,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:38:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:51,044 INFO L87 Difference]: Start difference. First operand 10302 states and 15886 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 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 00:38:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:52,447 INFO L93 Difference]: Finished difference Result 28910 states and 44255 transitions. [2022-01-11 00:38:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:38:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2022-01-11 00:38:52,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:52,481 INFO L225 Difference]: With dead ends: 28910 [2022-01-11 00:38:52,482 INFO L226 Difference]: Without dead ends: 19626 [2022-01-11 00:38:52,497 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 00:38:52,498 INFO L933 BasicCegarLoop]: 1548 mSDtfsCounter, 2062 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:52,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 2465 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:38:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19626 states. [2022-01-11 00:38:54,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19626 to 19472. [2022-01-11 00:38:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19472 states, 19470 states have (on average 1.5251669234720082) internal successors, (29695), 19471 states have internal predecessors, (29695), 0 states have call successors, (0), 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 00:38:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19472 states to 19472 states and 29695 transitions. [2022-01-11 00:38:54,229 INFO L78 Accepts]: Start accepts. Automaton has 19472 states and 29695 transitions. Word has length 248 [2022-01-11 00:38:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:54,230 INFO L470 AbstractCegarLoop]: Abstraction has 19472 states and 29695 transitions. [2022-01-11 00:38:54,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 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 00:38:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 19472 states and 29695 transitions. [2022-01-11 00:38:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-01-11 00:38:54,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:54,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:54,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:38:54,261 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:54,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:54,262 INFO L85 PathProgramCache]: Analyzing trace with hash 83010645, now seen corresponding path program 1 times [2022-01-11 00:38:54,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:54,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412679464] [2022-01-11 00:38:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:54,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:54,469 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 00:38:54,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:54,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412679464] [2022-01-11 00:38:54,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412679464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:54,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:54,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:38:54,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787869393] [2022-01-11 00:38:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:54,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:38:54,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:38:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:38:54,472 INFO L87 Difference]: Start difference. First operand 19472 states and 29695 transitions. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 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 00:38:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:57,209 INFO L93 Difference]: Finished difference Result 52318 states and 79619 transitions. [2022-01-11 00:38:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:38:57,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2022-01-11 00:38:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:57,257 INFO L225 Difference]: With dead ends: 52318 [2022-01-11 00:38:57,257 INFO L226 Difference]: Without dead ends: 33396 [2022-01-11 00:38:57,281 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 00:38:57,282 INFO L933 BasicCegarLoop]: 2001 mSDtfsCounter, 3388 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3388 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:57,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3388 Valid, 3832 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:38:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33396 states. [2022-01-11 00:38:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33396 to 21649. [2022-01-11 00:38:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21649 states, 21647 states have (on average 1.540444403381531) internal successors, (33346), 21648 states have internal predecessors, (33346), 0 states have call successors, (0), 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 00:38:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21649 states to 21649 states and 33346 transitions. [2022-01-11 00:38:59,337 INFO L78 Accepts]: Start accepts. Automaton has 21649 states and 33346 transitions. Word has length 250 [2022-01-11 00:38:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:59,337 INFO L470 AbstractCegarLoop]: Abstraction has 21649 states and 33346 transitions. [2022-01-11 00:38:59,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 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 00:38:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 21649 states and 33346 transitions. [2022-01-11 00:38:59,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-11 00:38:59,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:59,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:59,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:38:59,364 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:59,364 INFO L85 PathProgramCache]: Analyzing trace with hash -112040960, now seen corresponding path program 1 times [2022-01-11 00:38:59,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:59,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883952057] [2022-01-11 00:38:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:59,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:59,482 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 00:38:59,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:59,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883952057] [2022-01-11 00:38:59,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883952057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:59,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:59,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:38:59,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049974375] [2022-01-11 00:38:59,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:59,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:38:59,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:59,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:38:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:59,485 INFO L87 Difference]: Start difference. First operand 21649 states and 33346 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 00:39:03,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:03,160 INFO L93 Difference]: Finished difference Result 62214 states and 95402 transitions. [2022-01-11 00:39:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:39:03,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2022-01-11 00:39:03,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:03,229 INFO L225 Difference]: With dead ends: 62214 [2022-01-11 00:39:03,229 INFO L226 Difference]: Without dead ends: 41898 [2022-01-11 00:39:03,253 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 00:39:03,254 INFO L933 BasicCegarLoop]: 1887 mSDtfsCounter, 918 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:03,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2845 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:39:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41898 states. [2022-01-11 00:39:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41898 to 22124. [2022-01-11 00:39:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22124 states, 22122 states have (on average 1.5328632130910407) internal successors, (33910), 22123 states have internal predecessors, (33910), 0 states have call successors, (0), 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 00:39:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22124 states to 22124 states and 33910 transitions. [2022-01-11 00:39:05,438 INFO L78 Accepts]: Start accepts. Automaton has 22124 states and 33910 transitions. Word has length 252 [2022-01-11 00:39:05,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:39:05,438 INFO L470 AbstractCegarLoop]: Abstraction has 22124 states and 33910 transitions. [2022-01-11 00:39:05,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 00:39:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 22124 states and 33910 transitions. [2022-01-11 00:39:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-11 00:39:05,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:05,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:39:05,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:39:05,462 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash -750579025, now seen corresponding path program 1 times [2022-01-11 00:39:05,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:05,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109743856] [2022-01-11 00:39:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:05,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:05,686 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 00:39:05,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:05,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109743856] [2022-01-11 00:39:05,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109743856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:05,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:05,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:39:05,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201098784] [2022-01-11 00:39:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:05,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:39:05,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:39:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:39:05,688 INFO L87 Difference]: Start difference. First operand 22124 states and 33910 transitions. Second operand has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 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 00:39:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:10,153 INFO L93 Difference]: Finished difference Result 61738 states and 94336 transitions. [2022-01-11 00:39:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:39:10,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2022-01-11 00:39:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:10,216 INFO L225 Difference]: With dead ends: 61738 [2022-01-11 00:39:10,216 INFO L226 Difference]: Without dead ends: 41068 [2022-01-11 00:39:10,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:39:10,239 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 1826 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:10,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1826 Valid, 3367 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:39:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41068 states. [2022-01-11 00:39:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41068 to 40999. [2022-01-11 00:39:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40999 states, 40997 states have (on average 1.5143547088811375) internal successors, (62084), 40998 states have internal predecessors, (62084), 0 states have call successors, (0), 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 00:39:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40999 states to 40999 states and 62084 transitions. [2022-01-11 00:39:14,459 INFO L78 Accepts]: Start accepts. Automaton has 40999 states and 62084 transitions. Word has length 254 [2022-01-11 00:39:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:39:14,459 INFO L470 AbstractCegarLoop]: Abstraction has 40999 states and 62084 transitions. [2022-01-11 00:39:14,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 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 00:39:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 40999 states and 62084 transitions. [2022-01-11 00:39:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-11 00:39:14,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:14,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:39:14,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:39:14,640 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:14,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:14,641 INFO L85 PathProgramCache]: Analyzing trace with hash -980129239, now seen corresponding path program 1 times [2022-01-11 00:39:14,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:14,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24760804] [2022-01-11 00:39:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:14,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:14,779 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 00:39:14,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:14,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24760804] [2022-01-11 00:39:14,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24760804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:14,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:14,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:39:14,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160037137] [2022-01-11 00:39:14,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:14,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:39:14,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:39:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:39:14,782 INFO L87 Difference]: Start difference. First operand 40999 states and 62084 transitions. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 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 00:39:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:24,570 INFO L93 Difference]: Finished difference Result 123423 states and 184055 transitions. [2022-01-11 00:39:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:39:24,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2022-01-11 00:39:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:24,716 INFO L225 Difference]: With dead ends: 123423 [2022-01-11 00:39:24,716 INFO L226 Difference]: Without dead ends: 98143 [2022-01-11 00:39:24,761 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 00:39:24,762 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 2426 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 4270 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:24,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2426 Valid, 4270 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:39:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98143 states.