/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:01:57,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:01:57,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:01:57,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:01:57,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:01:57,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:01:57,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:01:57,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:01:57,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:01:57,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:01:57,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:01:57,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:01:57,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:01:57,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:01:57,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:01:57,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:01:57,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:01:57,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:01:57,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:01:57,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:01:57,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:01:57,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:01:57,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:01:57,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:01:57,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:01:57,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:01:57,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:01:57,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:01:57,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:01:57,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:01:57,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:01:57,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:01:57,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:01:57,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:01:57,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:01:57,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:01:57,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:01:57,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:01:57,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:01:57,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:01:57,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:01:57,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:01:57,180 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:01:57,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:01:57,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:01:57,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:01:57,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:01:57,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:01:57,181 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:01:57,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:01:57,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:01:57,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:01:57,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:01:57,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:01:57,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:01:57,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:01:57,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:01:57,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:01:57,184 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:01:57,184 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:01:57,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:01:57,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:01:57,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:01:57,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:01:57,407 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:01:57,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-01-11 07:01:57,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e57ad092/f0ab8a6de9b1401085368702cc366846/FLAGdbce41f36 [2022-01-11 07:01:58,169 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:01:58,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-01-11 07:01:58,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e57ad092/f0ab8a6de9b1401085368702cc366846/FLAGdbce41f36 [2022-01-11 07:01:58,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e57ad092/f0ab8a6de9b1401085368702cc366846 [2022-01-11 07:01:58,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:01:58,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:01:58,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:01:58,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:01:58,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:01:58,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:01:58" (1/1) ... [2022-01-11 07:01:58,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65da0b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:58, skipping insertion in model container [2022-01-11 07:01:58,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:01:58" (1/1) ... [2022-01-11 07:01:58,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:01:58,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:01:59,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-01-11 07:02:00,024 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-01-11 07:02:00,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:02:00,188 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:02:00,822 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-01-11 07:02:00,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-01-11 07:02:00,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:02:00,903 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:02:00,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00 WrapperNode [2022-01-11 07:02:00,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:02:00,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:02:00,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:02:00,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:02:00,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:00,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,324 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 48, calls inlined = 87, statements flattened = 13397 [2022-01-11 07:02:01,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:02:01,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:02:01,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:02:01,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:02:01,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:02:01,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:02:01,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:02:01,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:02:01,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (1/1) ... [2022-01-11 07:02:01,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:02:01,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:02:01,828 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 07:02:01,875 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 07:02:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:02:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:02:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:02:01,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:02:02,028 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:02:02,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:02:08,978 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:02:09,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:02:09,003 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-11 07:02:09,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:02:09 BoogieIcfgContainer [2022-01-11 07:02:09,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:02:09,008 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:02:09,008 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:02:09,010 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:02:09,012 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:02:09" (1/1) ... [2022-01-11 07:02:10,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:02:10 BasicIcfg [2022-01-11 07:02:10,146 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:02:10,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:02:10,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:02:10,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:02:10,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:01:58" (1/4) ... [2022-01-11 07:02:10,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f5e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:02:10, skipping insertion in model container [2022-01-11 07:02:10,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:02:00" (2/4) ... [2022-01-11 07:02:10,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f5e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:02:10, skipping insertion in model container [2022-01-11 07:02:10,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:02:09" (3/4) ... [2022-01-11 07:02:10,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f5e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:02:10, skipping insertion in model container [2022-01-11 07:02:10,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:02:10" (4/4) ... [2022-01-11 07:02:10,152 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.04.cil-1.cTransformedIcfg [2022-01-11 07:02:10,155 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:02:10,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:02:10,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:02:10,201 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 07:02:10,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:02:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 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 07:02:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:10,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:10,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:10,253 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash -647753568, now seen corresponding path program 1 times [2022-01-11 07:02:10,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:10,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973544908] [2022-01-11 07:02:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:10,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:10,521 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 07:02:10,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:10,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973544908] [2022-01-11 07:02:10,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973544908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:10,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:10,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:10,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767760752] [2022-01-11 07:02:10,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:10,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:10,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:10,549 INFO L87 Difference]: Start difference. First operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 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 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:10,711 INFO L93 Difference]: Finished difference Result 5216 states and 9466 transitions. [2022-01-11 07:02:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:10,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:10,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:10,733 INFO L225 Difference]: With dead ends: 5216 [2022-01-11 07:02:10,733 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:02:10,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:10,750 INFO L933 BasicCegarLoop]: 4655 mSDtfsCounter, 4648 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:10,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 4655 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:02:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-11 07:02:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8040062843676354) internal successors, (4593), 2547 states have internal predecessors, (4593), 0 states have call successors, (0), 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 07:02:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-01-11 07:02:10,857 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 77 [2022-01-11 07:02:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:10,857 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-01-11 07:02:10,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-01-11 07:02:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:10,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:10,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:10,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:02:10,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:10,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash 656640161, now seen corresponding path program 1 times [2022-01-11 07:02:10,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:10,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123927289] [2022-01-11 07:02:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:10,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:10,923 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 07:02:10,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:10,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123927289] [2022-01-11 07:02:10,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123927289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:10,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:10,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:10,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316176407] [2022-01-11 07:02:10,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:10,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:10,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:10,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:10,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:10,926 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:10,988 INFO L93 Difference]: Finished difference Result 2962 states and 5208 transitions. [2022-01-11 07:02:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:10,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:10,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:10,996 INFO L225 Difference]: With dead ends: 2962 [2022-01-11 07:02:10,996 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:02:10,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:10,999 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 4575 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:10,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 4583 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:02:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-11 07:02:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8020424194815396) internal successors, (4588), 2547 states have internal predecessors, (4588), 0 states have call successors, (0), 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 07:02:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4588 transitions. [2022-01-11 07:02:11,048 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4588 transitions. Word has length 77 [2022-01-11 07:02:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:11,049 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4588 transitions. [2022-01-11 07:02:11,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4588 transitions. [2022-01-11 07:02:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:11,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:11,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:11,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:02:11,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash -273275455, now seen corresponding path program 1 times [2022-01-11 07:02:11,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:11,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592358704] [2022-01-11 07:02:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:11,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:11,146 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 07:02:11,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:11,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592358704] [2022-01-11 07:02:11,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592358704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:11,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:11,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:11,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980851838] [2022-01-11 07:02:11,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:11,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:11,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:11,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:11,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:11,148 INFO L87 Difference]: Start difference. First operand 2548 states and 4588 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:11,197 INFO L93 Difference]: Finished difference Result 2961 states and 5197 transitions. [2022-01-11 07:02:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:11,205 INFO L225 Difference]: With dead ends: 2961 [2022-01-11 07:02:11,205 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:02:11,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:11,212 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 4569 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:11,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 4578 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:02:11,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-11 07:02:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8000785545954439) internal successors, (4583), 2547 states have internal predecessors, (4583), 0 states have call successors, (0), 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 07:02:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4583 transitions. [2022-01-11 07:02:11,263 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4583 transitions. Word has length 77 [2022-01-11 07:02:11,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:11,265 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4583 transitions. [2022-01-11 07:02:11,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4583 transitions. [2022-01-11 07:02:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:11,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:11,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:11,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:02:11,267 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:11,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:11,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1774937249, now seen corresponding path program 1 times [2022-01-11 07:02:11,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:11,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476829782] [2022-01-11 07:02:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:11,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:11,331 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 07:02:11,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476829782] [2022-01-11 07:02:11,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476829782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:11,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:11,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:11,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909710742] [2022-01-11 07:02:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:11,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:11,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:11,333 INFO L87 Difference]: Start difference. First operand 2548 states and 4583 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:11,380 INFO L93 Difference]: Finished difference Result 2960 states and 5186 transitions. [2022-01-11 07:02:11,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:11,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:11,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:11,389 INFO L225 Difference]: With dead ends: 2960 [2022-01-11 07:02:11,389 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:02:11,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:11,398 INFO L933 BasicCegarLoop]: 4573 mSDtfsCounter, 4563 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:11,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4563 Valid, 4573 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:02:11,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-11 07:02:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.798114689709348) internal successors, (4578), 2547 states have internal predecessors, (4578), 0 states have call successors, (0), 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 07:02:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4578 transitions. [2022-01-11 07:02:11,638 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4578 transitions. Word has length 77 [2022-01-11 07:02:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:11,639 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4578 transitions. [2022-01-11 07:02:11,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4578 transitions. [2022-01-11 07:02:11,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:11,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:11,640 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] [2022-01-11 07:02:11,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:02:11,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:11,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash 178440641, now seen corresponding path program 1 times [2022-01-11 07:02:11,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:11,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073116156] [2022-01-11 07:02:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:11,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:11,711 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 07:02:11,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:11,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073116156] [2022-01-11 07:02:11,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073116156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:11,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:11,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:11,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952970777] [2022-01-11 07:02:11,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:11,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:11,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:11,715 INFO L87 Difference]: Start difference. First operand 2548 states and 4578 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:11,774 INFO L93 Difference]: Finished difference Result 2959 states and 5175 transitions. [2022-01-11 07:02:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:11,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:11,783 INFO L225 Difference]: With dead ends: 2959 [2022-01-11 07:02:11,783 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:02:11,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:11,785 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 4498 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:11,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 4602 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:02:11,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-11 07:02:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.793401413982718) internal successors, (4566), 2547 states have internal predecessors, (4566), 0 states have call successors, (0), 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 07:02:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4566 transitions. [2022-01-11 07:02:11,835 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4566 transitions. Word has length 77 [2022-01-11 07:02:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:11,838 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4566 transitions. [2022-01-11 07:02:11,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:11,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4566 transitions. [2022-01-11 07:02:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:11,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:11,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:11,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:02:11,844 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash 581156033, now seen corresponding path program 1 times [2022-01-11 07:02:11,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:11,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103094270] [2022-01-11 07:02:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:11,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:11,911 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 07:02:11,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:11,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103094270] [2022-01-11 07:02:11,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103094270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:11,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:11,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:11,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168494939] [2022-01-11 07:02:11,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:11,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:11,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:11,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:11,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:11,913 INFO L87 Difference]: Start difference. First operand 2548 states and 4566 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:11,972 INFO L93 Difference]: Finished difference Result 2958 states and 5150 transitions. [2022-01-11 07:02:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:11,980 INFO L225 Difference]: With dead ends: 2958 [2022-01-11 07:02:11,980 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:02:11,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:11,982 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4486 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:11,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4486 Valid, 4589 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:02:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-11 07:02:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.788688138256088) internal successors, (4554), 2547 states have internal predecessors, (4554), 0 states have call successors, (0), 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 07:02:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4554 transitions. [2022-01-11 07:02:12,029 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4554 transitions. Word has length 77 [2022-01-11 07:02:12,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:12,030 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4554 transitions. [2022-01-11 07:02:12,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4554 transitions. [2022-01-11 07:02:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:12,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:12,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:12,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:02:12,031 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1768998816, now seen corresponding path program 1 times [2022-01-11 07:02:12,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:12,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573067024] [2022-01-11 07:02:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:12,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:12,070 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 07:02:12,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:12,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573067024] [2022-01-11 07:02:12,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573067024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:12,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:12,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:12,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029637994] [2022-01-11 07:02:12,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:12,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:12,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:12,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:12,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:12,072 INFO L87 Difference]: Start difference. First operand 2548 states and 4554 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:12,126 INFO L93 Difference]: Finished difference Result 2956 states and 5123 transitions. [2022-01-11 07:02:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:12,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:12,134 INFO L225 Difference]: With dead ends: 2956 [2022-01-11 07:02:12,135 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:02:12,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:12,137 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 4473 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:12,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 4576 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:02:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-11 07:02:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.783974862529458) internal successors, (4542), 2547 states have internal predecessors, (4542), 0 states have call successors, (0), 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 07:02:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4542 transitions. [2022-01-11 07:02:12,202 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4542 transitions. Word has length 77 [2022-01-11 07:02:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:12,204 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4542 transitions. [2022-01-11 07:02:12,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4542 transitions. [2022-01-11 07:02:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:12,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:12,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:12,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:02:12,207 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1127088383, now seen corresponding path program 1 times [2022-01-11 07:02:12,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:12,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481307322] [2022-01-11 07:02:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:12,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:12,244 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 07:02:12,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:12,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481307322] [2022-01-11 07:02:12,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481307322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:12,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:12,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:12,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26584955] [2022-01-11 07:02:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:12,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:12,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:12,246 INFO L87 Difference]: Start difference. First operand 2548 states and 4542 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:12,301 INFO L93 Difference]: Finished difference Result 2955 states and 5098 transitions. [2022-01-11 07:02:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:12,311 INFO L225 Difference]: With dead ends: 2955 [2022-01-11 07:02:12,311 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:02:12,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:12,313 INFO L933 BasicCegarLoop]: 4518 mSDtfsCounter, 4461 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:12,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 4563 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:02:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-11 07:02:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.7792615868028279) internal successors, (4530), 2547 states have internal predecessors, (4530), 0 states have call successors, (0), 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 07:02:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4530 transitions. [2022-01-11 07:02:12,363 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4530 transitions. Word has length 77 [2022-01-11 07:02:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:12,363 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4530 transitions. [2022-01-11 07:02:12,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4530 transitions. [2022-01-11 07:02:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:12,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:12,364 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] [2022-01-11 07:02:12,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:02:12,365 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:12,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2130979199, now seen corresponding path program 1 times [2022-01-11 07:02:12,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:12,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051576984] [2022-01-11 07:02:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:12,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:12,456 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 07:02:12,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:12,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051576984] [2022-01-11 07:02:12,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051576984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:12,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:12,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:02:12,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74207215] [2022-01-11 07:02:12,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:12,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:02:12,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:02:12,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:02:12,458 INFO L87 Difference]: Start difference. First operand 2548 states and 4530 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:12,606 INFO L93 Difference]: Finished difference Result 3162 states and 5362 transitions. [2022-01-11 07:02:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:02:12,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:12,628 INFO L225 Difference]: With dead ends: 3162 [2022-01-11 07:02:12,629 INFO L226 Difference]: Without dead ends: 2769 [2022-01-11 07:02:12,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:02:12,631 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 1458 mSDsluCounter, 12849 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 17413 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:12,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 17413 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:02:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-11 07:02:12,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2551. [2022-01-11 07:02:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2551 states, 2549 states have (on average 1.7755982738328757) internal successors, (4526), 2550 states have internal predecessors, (4526), 0 states have call successors, (0), 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 07:02:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 4526 transitions. [2022-01-11 07:02:12,811 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 4526 transitions. Word has length 77 [2022-01-11 07:02:12,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:12,811 INFO L470 AbstractCegarLoop]: Abstraction has 2551 states and 4526 transitions. [2022-01-11 07:02:12,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 4526 transitions. [2022-01-11 07:02:12,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:12,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:12,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:12,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:02:12,813 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:12,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:12,813 INFO L85 PathProgramCache]: Analyzing trace with hash 430238720, now seen corresponding path program 1 times [2022-01-11 07:02:12,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:12,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573922667] [2022-01-11 07:02:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:12,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:12,839 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 07:02:12,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:12,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573922667] [2022-01-11 07:02:12,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573922667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:12,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:12,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:12,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100570190] [2022-01-11 07:02:12,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:12,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:12,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:12,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:12,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:12,841 INFO L87 Difference]: Start difference. First operand 2551 states and 4526 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:12,911 INFO L93 Difference]: Finished difference Result 3262 states and 5464 transitions. [2022-01-11 07:02:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:12,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:12,917 INFO L225 Difference]: With dead ends: 3262 [2022-01-11 07:02:12,917 INFO L226 Difference]: Without dead ends: 2868 [2022-01-11 07:02:12,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:12,919 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 4415 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4972 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:12,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4972 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-11 07:02:12,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2864. [2022-01-11 07:02:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2862 states have (on average 1.7232704402515724) internal successors, (4932), 2863 states have internal predecessors, (4932), 0 states have call successors, (0), 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 07:02:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4932 transitions. [2022-01-11 07:02:12,982 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4932 transitions. Word has length 77 [2022-01-11 07:02:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:12,982 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 4932 transitions. [2022-01-11 07:02:12,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4932 transitions. [2022-01-11 07:02:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:12,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:12,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:12,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:02:12,983 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash 229688575, now seen corresponding path program 1 times [2022-01-11 07:02:12,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:12,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727612442] [2022-01-11 07:02:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:12,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:13,012 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 07:02:13,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:13,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727612442] [2022-01-11 07:02:13,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727612442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:13,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:13,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:13,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115892193] [2022-01-11 07:02:13,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:13,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:13,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:13,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:13,014 INFO L87 Difference]: Start difference. First operand 2864 states and 4932 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:13,096 INFO L93 Difference]: Finished difference Result 4200 states and 6687 transitions. [2022-01-11 07:02:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:13,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:13,110 INFO L225 Difference]: With dead ends: 4200 [2022-01-11 07:02:13,111 INFO L226 Difference]: Without dead ends: 3468 [2022-01-11 07:02:13,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:13,114 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 4415 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4986 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:13,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4986 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2022-01-11 07:02:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3466. [2022-01-11 07:02:13,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6521362586605082) internal successors, (5723), 3465 states have internal predecessors, (5723), 0 states have call successors, (0), 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 07:02:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5723 transitions. [2022-01-11 07:02:13,213 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5723 transitions. Word has length 77 [2022-01-11 07:02:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:13,213 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5723 transitions. [2022-01-11 07:02:13,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5723 transitions. [2022-01-11 07:02:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:13,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:13,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:13,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:02:13,215 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1847520768, now seen corresponding path program 1 times [2022-01-11 07:02:13,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:13,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107991161] [2022-01-11 07:02:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:13,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:13,255 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 07:02:13,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107991161] [2022-01-11 07:02:13,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107991161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:13,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:13,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:13,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666010421] [2022-01-11 07:02:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:13,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:13,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:13,257 INFO L87 Difference]: Start difference. First operand 3466 states and 5723 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:13,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:13,347 INFO L93 Difference]: Finished difference Result 4793 states and 7464 transitions. [2022-01-11 07:02:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:13,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:13,354 INFO L225 Difference]: With dead ends: 4793 [2022-01-11 07:02:13,354 INFO L226 Difference]: Without dead ends: 3466 [2022-01-11 07:02:13,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:13,358 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4401 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:13,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4401 Valid, 4539 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2022-01-11 07:02:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3466. [2022-01-11 07:02:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6449191685912241) internal successors, (5698), 3465 states have internal predecessors, (5698), 0 states have call successors, (0), 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 07:02:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5698 transitions. [2022-01-11 07:02:13,457 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5698 transitions. Word has length 77 [2022-01-11 07:02:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:13,458 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5698 transitions. [2022-01-11 07:02:13,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5698 transitions. [2022-01-11 07:02:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 07:02:13,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:13,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:13,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:02:13,459 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1450374175, now seen corresponding path program 1 times [2022-01-11 07:02:13,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:13,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602804469] [2022-01-11 07:02:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:13,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:13,503 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 07:02:13,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:13,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602804469] [2022-01-11 07:02:13,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602804469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:13,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:13,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:13,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461333227] [2022-01-11 07:02:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:13,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:13,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:13,505 INFO L87 Difference]: Start difference. First operand 3466 states and 5698 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:13,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:13,642 INFO L93 Difference]: Finished difference Result 6029 states and 9021 transitions. [2022-01-11 07:02:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:13,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 07:02:13,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:13,651 INFO L225 Difference]: With dead ends: 6029 [2022-01-11 07:02:13,651 INFO L226 Difference]: Without dead ends: 4706 [2022-01-11 07:02:13,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:13,656 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4409 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 4947 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:13,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 4947 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:13,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2022-01-11 07:02:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4560. [2022-01-11 07:02:13,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4558 states have (on average 1.556823168056165) internal successors, (7096), 4559 states have internal predecessors, (7096), 0 states have call successors, (0), 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 07:02:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7096 transitions. [2022-01-11 07:02:13,839 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7096 transitions. Word has length 77 [2022-01-11 07:02:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:13,839 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7096 transitions. [2022-01-11 07:02:13,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7096 transitions. [2022-01-11 07:02:13,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 07:02:13,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:13,841 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:13,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:02:13,842 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1630624386, now seen corresponding path program 1 times [2022-01-11 07:02:13,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:13,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261547539] [2022-01-11 07:02:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:13,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:13,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:13,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261547539] [2022-01-11 07:02:13,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261547539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:13,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:13,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:13,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461377805] [2022-01-11 07:02:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:13,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:13,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:13,887 INFO L87 Difference]: Start difference. First operand 4560 states and 7096 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:02:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:14,134 INFO L93 Difference]: Finished difference Result 9212 states and 13099 transitions. [2022-01-11 07:02:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:14,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 07:02:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:14,147 INFO L225 Difference]: With dead ends: 9212 [2022-01-11 07:02:14,148 INFO L226 Difference]: Without dead ends: 6801 [2022-01-11 07:02:14,154 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 07:02:14,154 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 4418 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:14,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2022-01-11 07:02:14,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6571. [2022-01-11 07:02:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6569 states have (on average 1.472674684122393) internal successors, (9674), 6570 states have internal predecessors, (9674), 0 states have call successors, (0), 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 07:02:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 9674 transitions. [2022-01-11 07:02:14,406 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 9674 transitions. Word has length 124 [2022-01-11 07:02:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:14,406 INFO L470 AbstractCegarLoop]: Abstraction has 6571 states and 9674 transitions. [2022-01-11 07:02:14,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:02:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 9674 transitions. [2022-01-11 07:02:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 07:02:14,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:14,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:14,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:02:14,410 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:14,410 INFO L85 PathProgramCache]: Analyzing trace with hash 549899582, now seen corresponding path program 1 times [2022-01-11 07:02:14,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:14,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915593175] [2022-01-11 07:02:14,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:14,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:14,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:14,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915593175] [2022-01-11 07:02:14,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915593175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:14,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:14,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:02:14,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473309115] [2022-01-11 07:02:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:14,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:02:14,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:14,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:02:14,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:02:14,468 INFO L87 Difference]: Start difference. First operand 6571 states and 9674 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:02:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:14,906 INFO L93 Difference]: Finished difference Result 14833 states and 20425 transitions. [2022-01-11 07:02:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:02:14,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 07:02:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:14,925 INFO L225 Difference]: With dead ends: 14833 [2022-01-11 07:02:14,925 INFO L226 Difference]: Without dead ends: 10435 [2022-01-11 07:02:14,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:02:14,933 INFO L933 BasicCegarLoop]: 4479 mSDtfsCounter, 1136 mSDsluCounter, 13259 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 17738 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:14,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 17738 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:02:14,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-01-11 07:02:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 6619. [2022-01-11 07:02:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6619 states, 6617 states have (on average 1.4594226991083572) internal successors, (9657), 6618 states have internal predecessors, (9657), 0 states have call successors, (0), 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 07:02:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 9657 transitions. [2022-01-11 07:02:15,171 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 9657 transitions. Word has length 124 [2022-01-11 07:02:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:15,171 INFO L470 AbstractCegarLoop]: Abstraction has 6619 states and 9657 transitions. [2022-01-11 07:02:15,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:02:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 9657 transitions. [2022-01-11 07:02:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 07:02:15,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:15,173 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:15,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:02:15,174 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:15,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash 584686780, now seen corresponding path program 1 times [2022-01-11 07:02:15,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:15,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114553499] [2022-01-11 07:02:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:15,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:15,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:15,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114553499] [2022-01-11 07:02:15,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114553499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:15,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:15,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:15,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345642457] [2022-01-11 07:02:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:15,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:15,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:15,214 INFO L87 Difference]: Start difference. First operand 6619 states and 9657 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:02:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:15,629 INFO L93 Difference]: Finished difference Result 15041 states and 20225 transitions. [2022-01-11 07:02:15,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:15,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 07:02:15,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:15,649 INFO L225 Difference]: With dead ends: 15041 [2022-01-11 07:02:15,649 INFO L226 Difference]: Without dead ends: 10607 [2022-01-11 07:02:15,658 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 07:02:15,659 INFO L933 BasicCegarLoop]: 4690 mSDtfsCounter, 4315 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:15,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4315 Valid, 5208 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2022-01-11 07:02:16,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 10605. [2022-01-11 07:02:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10605 states, 10603 states have (on average 1.3708384419503914) internal successors, (14535), 10604 states have internal predecessors, (14535), 0 states have call successors, (0), 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 07:02:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10605 states to 10605 states and 14535 transitions. [2022-01-11 07:02:16,156 INFO L78 Accepts]: Start accepts. Automaton has 10605 states and 14535 transitions. Word has length 124 [2022-01-11 07:02:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:16,157 INFO L470 AbstractCegarLoop]: Abstraction has 10605 states and 14535 transitions. [2022-01-11 07:02:16,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 07:02:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 10605 states and 14535 transitions. [2022-01-11 07:02:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 07:02:16,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:16,162 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:16,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:02:16,162 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1810932571, now seen corresponding path program 1 times [2022-01-11 07:02:16,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:16,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936974545] [2022-01-11 07:02:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:16,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:02:16,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:16,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936974545] [2022-01-11 07:02:16,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936974545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:16,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:16,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:16,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167173535] [2022-01-11 07:02:16,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:16,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:16,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:16,189 INFO L87 Difference]: Start difference. First operand 10605 states and 14535 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 07:02:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:16,570 INFO L93 Difference]: Finished difference Result 18967 states and 24972 transitions. [2022-01-11 07:02:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:16,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 124 [2022-01-11 07:02:16,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:16,591 INFO L225 Difference]: With dead ends: 18967 [2022-01-11 07:02:16,591 INFO L226 Difference]: Without dead ends: 10547 [2022-01-11 07:02:16,601 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 07:02:16,602 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 532 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 8452 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:16,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 8452 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:16,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10547 states. [2022-01-11 07:02:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 10547. [2022-01-11 07:02:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10547 states, 10545 states have (on average 1.3720246562351825) internal successors, (14468), 10546 states have internal predecessors, (14468), 0 states have call successors, (0), 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 07:02:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10547 states to 10547 states and 14468 transitions. [2022-01-11 07:02:16,970 INFO L78 Accepts]: Start accepts. Automaton has 10547 states and 14468 transitions. Word has length 124 [2022-01-11 07:02:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:16,971 INFO L470 AbstractCegarLoop]: Abstraction has 10547 states and 14468 transitions. [2022-01-11 07:02:16,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 07:02:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 10547 states and 14468 transitions. [2022-01-11 07:02:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 07:02:16,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:16,975 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:16,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:02:16,975 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash -858880914, now seen corresponding path program 1 times [2022-01-11 07:02:16,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:16,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731519867] [2022-01-11 07:02:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:16,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:17,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:17,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731519867] [2022-01-11 07:02:17,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731519867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:17,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:17,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:17,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487518092] [2022-01-11 07:02:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:17,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:17,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:17,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:17,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:17,013 INFO L87 Difference]: Start difference. First operand 10547 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:17,626 INFO L93 Difference]: Finished difference Result 26816 states and 34670 transitions. [2022-01-11 07:02:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:17,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-11 07:02:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:17,654 INFO L225 Difference]: With dead ends: 26816 [2022-01-11 07:02:17,654 INFO L226 Difference]: Without dead ends: 18454 [2022-01-11 07:02:17,668 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 07:02:17,668 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 4418 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:17,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5128 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2022-01-11 07:02:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18164. [2022-01-11 07:02:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18164 states, 18162 states have (on average 1.3104283669199428) internal successors, (23800), 18163 states have internal predecessors, (23800), 0 states have call successors, (0), 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 07:02:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18164 states to 18164 states and 23800 transitions. [2022-01-11 07:02:18,458 INFO L78 Accepts]: Start accepts. Automaton has 18164 states and 23800 transitions. Word has length 125 [2022-01-11 07:02:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:18,458 INFO L470 AbstractCegarLoop]: Abstraction has 18164 states and 23800 transitions. [2022-01-11 07:02:18,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18164 states and 23800 transitions. [2022-01-11 07:02:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 07:02:18,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:18,467 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:18,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:02:18,467 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 38033487, now seen corresponding path program 1 times [2022-01-11 07:02:18,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:18,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846067883] [2022-01-11 07:02:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:18,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:02:18,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:18,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846067883] [2022-01-11 07:02:18,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846067883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:18,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:18,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:18,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333882770] [2022-01-11 07:02:18,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:18,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:18,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:18,495 INFO L87 Difference]: Start difference. First operand 18164 states and 23800 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 07:02:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:19,110 INFO L93 Difference]: Finished difference Result 30318 states and 38834 transitions. [2022-01-11 07:02:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:19,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-11 07:02:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:19,126 INFO L225 Difference]: With dead ends: 30318 [2022-01-11 07:02:19,127 INFO L226 Difference]: Without dead ends: 14313 [2022-01-11 07:02:19,146 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 07:02:19,147 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 530 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 8451 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:19,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 8451 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14313 states. [2022-01-11 07:02:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14313 to 14313. [2022-01-11 07:02:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14313 states, 14311 states have (on average 1.3300957305569143) internal successors, (19035), 14312 states have internal predecessors, (19035), 0 states have call successors, (0), 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 07:02:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 19035 transitions. [2022-01-11 07:02:19,703 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 19035 transitions. Word has length 125 [2022-01-11 07:02:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:19,703 INFO L470 AbstractCegarLoop]: Abstraction has 14313 states and 19035 transitions. [2022-01-11 07:02:19,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 07:02:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 19035 transitions. [2022-01-11 07:02:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 07:02:19,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:19,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:19,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:02:19,708 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 601273385, now seen corresponding path program 1 times [2022-01-11 07:02:19,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:19,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121340384] [2022-01-11 07:02:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:19,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:19,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:19,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121340384] [2022-01-11 07:02:19,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121340384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:19,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:19,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:19,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233476929] [2022-01-11 07:02:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:19,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:19,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:19,739 INFO L87 Difference]: Start difference. First operand 14313 states and 19035 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 07:02:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:20,669 INFO L93 Difference]: Finished difference Result 37129 states and 47171 transitions. [2022-01-11 07:02:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:20,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-11 07:02:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:20,700 INFO L225 Difference]: With dead ends: 37129 [2022-01-11 07:02:20,701 INFO L226 Difference]: Without dead ends: 25001 [2022-01-11 07:02:20,716 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 07:02:20,716 INFO L933 BasicCegarLoop]: 4641 mSDtfsCounter, 4418 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:20,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25001 states. [2022-01-11 07:02:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25001 to 24327. [2022-01-11 07:02:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24327 states, 24325 states have (on average 1.2857965056526208) internal successors, (31277), 24326 states have internal predecessors, (31277), 0 states have call successors, (0), 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 07:02:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24327 states to 24327 states and 31277 transitions. [2022-01-11 07:02:21,827 INFO L78 Accepts]: Start accepts. Automaton has 24327 states and 31277 transitions. Word has length 126 [2022-01-11 07:02:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:21,827 INFO L470 AbstractCegarLoop]: Abstraction has 24327 states and 31277 transitions. [2022-01-11 07:02:21,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 07:02:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 24327 states and 31277 transitions. [2022-01-11 07:02:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 07:02:21,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:21,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:21,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:02:21,836 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1938805690, now seen corresponding path program 1 times [2022-01-11 07:02:21,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:21,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893452635] [2022-01-11 07:02:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:21,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:02:21,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:21,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893452635] [2022-01-11 07:02:21,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893452635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:21,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:21,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:21,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277100196] [2022-01-11 07:02:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:21,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:21,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:21,860 INFO L87 Difference]: Start difference. First operand 24327 states and 31277 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 07:02:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:22,812 INFO L93 Difference]: Finished difference Result 46432 states and 58482 transitions. [2022-01-11 07:02:22,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:22,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 126 [2022-01-11 07:02:22,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:22,840 INFO L225 Difference]: With dead ends: 46432 [2022-01-11 07:02:22,840 INFO L226 Difference]: Without dead ends: 24271 [2022-01-11 07:02:22,855 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 07:02:22,855 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 528 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 8450 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:22,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 8450 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24271 states. [2022-01-11 07:02:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24271 to 24271. [2022-01-11 07:02:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24271 states, 24269 states have (on average 1.2861675388355516) internal successors, (31214), 24270 states have internal predecessors, (31214), 0 states have call successors, (0), 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 07:02:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24271 states to 24271 states and 31214 transitions. [2022-01-11 07:02:23,916 INFO L78 Accepts]: Start accepts. Automaton has 24271 states and 31214 transitions. Word has length 126 [2022-01-11 07:02:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:23,916 INFO L470 AbstractCegarLoop]: Abstraction has 24271 states and 31214 transitions. [2022-01-11 07:02:23,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 07:02:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 24271 states and 31214 transitions. [2022-01-11 07:02:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 07:02:23,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:23,923 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:23,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:02:23,923 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash -386128003, now seen corresponding path program 1 times [2022-01-11 07:02:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:23,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859568804] [2022-01-11 07:02:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:23,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:23,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:23,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859568804] [2022-01-11 07:02:23,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859568804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:23,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:23,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:23,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782434797] [2022-01-11 07:02:23,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:23,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:23,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:23,978 INFO L87 Difference]: Start difference. First operand 24271 states and 31214 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:25,964 INFO L93 Difference]: Finished difference Result 64498 states and 80668 transitions. [2022-01-11 07:02:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:25,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 07:02:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:26,025 INFO L225 Difference]: With dead ends: 64498 [2022-01-11 07:02:26,025 INFO L226 Difference]: Without dead ends: 42412 [2022-01-11 07:02:26,052 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 07:02:26,053 INFO L933 BasicCegarLoop]: 4632 mSDtfsCounter, 4324 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:26,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 5144 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42412 states. [2022-01-11 07:02:27,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42412 to 42410. [2022-01-11 07:02:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42410 states, 42408 states have (on average 1.2583003206942087) internal successors, (53362), 42409 states have internal predecessors, (53362), 0 states have call successors, (0), 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 07:02:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42410 states to 42410 states and 53362 transitions. [2022-01-11 07:02:28,063 INFO L78 Accepts]: Start accepts. Automaton has 42410 states and 53362 transitions. Word has length 127 [2022-01-11 07:02:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:28,063 INFO L470 AbstractCegarLoop]: Abstraction has 42410 states and 53362 transitions. [2022-01-11 07:02:28,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 42410 states and 53362 transitions. [2022-01-11 07:02:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 07:02:28,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:28,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:28,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:02:28,074 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:28,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash 840117788, now seen corresponding path program 1 times [2022-01-11 07:02:28,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:28,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990667512] [2022-01-11 07:02:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:28,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:02:28,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:28,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990667512] [2022-01-11 07:02:28,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990667512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:28,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:28,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:28,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175669524] [2022-01-11 07:02:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:28,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:28,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:28,100 INFO L87 Difference]: Start difference. First operand 42410 states and 53362 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:30,215 INFO L93 Difference]: Finished difference Result 82580 states and 102635 transitions. [2022-01-11 07:02:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:30,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 07:02:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:30,265 INFO L225 Difference]: With dead ends: 82580 [2022-01-11 07:02:30,265 INFO L226 Difference]: Without dead ends: 42355 [2022-01-11 07:02:30,297 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 07:02:30,300 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 526 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:30,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 8449 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42355 states. [2022-01-11 07:02:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42355 to 42355. [2022-01-11 07:02:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42355 states, 42353 states have (on average 1.2584940854248814) internal successors, (53301), 42354 states have internal predecessors, (53301), 0 states have call successors, (0), 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 07:02:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42355 states to 42355 states and 53301 transitions. [2022-01-11 07:02:32,187 INFO L78 Accepts]: Start accepts. Automaton has 42355 states and 53301 transitions. Word has length 127 [2022-01-11 07:02:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:32,187 INFO L470 AbstractCegarLoop]: Abstraction has 42355 states and 53301 transitions. [2022-01-11 07:02:32,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 42355 states and 53301 transitions. [2022-01-11 07:02:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 07:02:32,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:32,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:32,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:02:32,197 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1501899619, now seen corresponding path program 1 times [2022-01-11 07:02:32,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:32,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17905719] [2022-01-11 07:02:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:32,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:32,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:32,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17905719] [2022-01-11 07:02:32,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17905719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:32,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:32,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:32,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204092456] [2022-01-11 07:02:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:32,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:32,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:32,259 INFO L87 Difference]: Start difference. First operand 42355 states and 53301 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:35,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:35,723 INFO L93 Difference]: Finished difference Result 118080 states and 145974 transitions. [2022-01-11 07:02:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:35,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-11 07:02:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:35,842 INFO L225 Difference]: With dead ends: 118080 [2022-01-11 07:02:35,842 INFO L226 Difference]: Without dead ends: 77910 [2022-01-11 07:02:35,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:02:35,883 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 449 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 9413 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:35,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 9413 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77910 states. [2022-01-11 07:02:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77910 to 77910. [2022-01-11 07:02:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 77908 states have (on average 1.2313626328490015) internal successors, (95933), 77909 states have internal predecessors, (95933), 0 states have call successors, (0), 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 07:02:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 95933 transitions. [2022-01-11 07:02:39,897 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 95933 transitions. Word has length 128 [2022-01-11 07:02:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:39,898 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 95933 transitions. [2022-01-11 07:02:39,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 95933 transitions. [2022-01-11 07:02:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 07:02:39,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:39,942 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:39,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:02:39,942 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1562361697, now seen corresponding path program 1 times [2022-01-11 07:02:39,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:39,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409967369] [2022-01-11 07:02:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:39,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:39,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:39,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409967369] [2022-01-11 07:02:39,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409967369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:39,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:39,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:39,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091381521] [2022-01-11 07:02:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:39,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:39,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:39,983 INFO L87 Difference]: Start difference. First operand 77910 states and 95933 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 07:02:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:45,289 INFO L93 Difference]: Finished difference Result 187344 states and 228665 transitions. [2022-01-11 07:02:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:45,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 07:02:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:45,485 INFO L225 Difference]: With dead ends: 187344 [2022-01-11 07:02:45,486 INFO L226 Difference]: Without dead ends: 111630 [2022-01-11 07:02:45,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:02:45,553 INFO L933 BasicCegarLoop]: 4482 mSDtfsCounter, 4301 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 4927 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:45,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 4927 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:02:45,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111630 states. [2022-01-11 07:02:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111630 to 111244. [2022-01-11 07:02:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111244 states, 111242 states have (on average 1.2194045414501717) internal successors, (135649), 111243 states have internal predecessors, (135649), 0 states have call successors, (0), 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 07:02:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111244 states to 111244 states and 135649 transitions. [2022-01-11 07:02:51,550 INFO L78 Accepts]: Start accepts. Automaton has 111244 states and 135649 transitions. Word has length 165 [2022-01-11 07:02:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:51,550 INFO L470 AbstractCegarLoop]: Abstraction has 111244 states and 135649 transitions. [2022-01-11 07:02:51,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 07:02:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 111244 states and 135649 transitions. [2022-01-11 07:02:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 07:02:51,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:51,601 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:51,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:02:51,602 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1763675689, now seen corresponding path program 1 times [2022-01-11 07:02:51,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:51,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152430170] [2022-01-11 07:02:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:51,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:51,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:51,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152430170] [2022-01-11 07:02:51,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152430170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:51,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:51,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:51,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675223711] [2022-01-11 07:02:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:51,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:51,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:51,645 INFO L87 Difference]: Start difference. First operand 111244 states and 135649 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)