/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:20:21,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:20:21,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:20:21,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:20:21,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:20:21,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:20:21,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:20:21,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:20:21,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:20:21,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:20:21,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:20:21,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:20:21,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:20:21,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:20:21,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:20:21,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:20:21,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:20:21,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:20:21,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:20:21,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:20:21,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:20:21,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:20:21,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:20:21,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:20:21,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:20:21,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:20:21,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:20:21,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:20:21,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:20:21,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:20:21,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:20:21,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:20:21,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:20:21,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:20:21,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:20:21,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:20:21,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:20:21,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:20:21,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:20:21,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:20:21,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:20:21,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:20:21,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:20:21,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:20:21,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:20:21,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:20:21,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:20:21,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:20:21,184 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:20:21,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:20:21,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:20:21,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:20:21,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:20:21,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:20:21,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:20:21,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:20:21,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:20:21,187 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:20:21,187 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:20:21,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:20:21,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:20:21,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:20:21,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:20:21,374 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:20:21,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 13:20:21,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11b7337b/1daa5a28e5eb48ee80af571f13d70f98/FLAG3a6f6d4dc [2022-01-10 13:20:21,891 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:20:21,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 13:20:21,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11b7337b/1daa5a28e5eb48ee80af571f13d70f98/FLAG3a6f6d4dc [2022-01-10 13:20:21,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11b7337b/1daa5a28e5eb48ee80af571f13d70f98 [2022-01-10 13:20:21,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:20:21,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:20:21,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:20:21,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:20:21,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:20:21,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:20:21" (1/1) ... [2022-01-10 13:20:21,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd93303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:21, skipping insertion in model container [2022-01-10 13:20:21,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:20:21" (1/1) ... [2022-01-10 13:20:21,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:20:21,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:20:22,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13672,13685] [2022-01-10 13:20:22,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:20:22,232 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:20:22,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13672,13685] [2022-01-10 13:20:22,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:20:22,328 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:20:22,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22 WrapperNode [2022-01-10 13:20:22,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:20:22,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:20:22,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:20:22,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:20:22,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,394 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1340 [2022-01-10 13:20:22,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:20:22,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:20:22,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:20:22,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:20:22,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:20:22,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:20:22,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:20:22,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:20:22,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (1/1) ... [2022-01-10 13:20:22,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:20:22,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:20:22,465 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) [2022-01-10 13:20:22,468 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 [2022-01-10 13:20:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:20:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:20:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:20:22,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:20:22,652 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:20:22,653 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:20:23,361 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:20:23,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:20:23,375 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:20:23,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:20:23 BoogieIcfgContainer [2022-01-10 13:20:23,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:20:23,380 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:20:23,381 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:20:23,382 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:20:23,383 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:20:23" (1/1) ... [2022-01-10 13:20:23,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:20:23 BasicIcfg [2022-01-10 13:20:23,807 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:20:23,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:20:23,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:20:23,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:20:23,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:20:21" (1/4) ... [2022-01-10 13:20:23,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ad39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:20:23, skipping insertion in model container [2022-01-10 13:20:23,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:20:22" (2/4) ... [2022-01-10 13:20:23,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ad39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:20:23, skipping insertion in model container [2022-01-10 13:20:23,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:20:23" (3/4) ... [2022-01-10 13:20:23,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ad39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:20:23, skipping insertion in model container [2022-01-10 13:20:23,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:20:23" (4/4) ... [2022-01-10 13:20:23,814 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 13:20:23,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:20:23,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:20:23,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:20:23,869 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 [2022-01-10 13:20:23,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:20:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 340 states have (on average 1.7970588235294118) internal successors, (611), 341 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 13:20:23,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:23,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:23,906 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1926199726, now seen corresponding path program 1 times [2022-01-10 13:20:23,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:23,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553045405] [2022-01-10 13:20:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:23,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:24,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:24,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553045405] [2022-01-10 13:20:24,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553045405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:24,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:24,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:20:24,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152168740] [2022-01-10 13:20:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:24,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:20:24,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:24,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:20:24,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:20:24,584 INFO L87 Difference]: Start difference. First operand has 342 states, 340 states have (on average 1.7970588235294118) internal successors, (611), 341 states have internal predecessors, (611), 0 states have call successors, (0), 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 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) [2022-01-10 13:20:26,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:20:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:26,921 INFO L93 Difference]: Finished difference Result 628 states and 1091 transitions. [2022-01-10 13:20:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:20:26,924 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 118 [2022-01-10 13:20:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:26,942 INFO L225 Difference]: With dead ends: 628 [2022-01-10 13:20:26,942 INFO L226 Difference]: Without dead ends: 473 [2022-01-10 13:20:26,944 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 [2022-01-10 13:20:26,947 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 256 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:26,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 1132 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 13:20:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-01-10 13:20:27,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2022-01-10 13:20:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.6574468085106382) internal successors, (779), 470 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 779 transitions. [2022-01-10 13:20:27,039 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 779 transitions. Word has length 118 [2022-01-10 13:20:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:27,040 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 779 transitions. [2022-01-10 13:20:27,040 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) [2022-01-10 13:20:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 779 transitions. [2022-01-10 13:20:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 13:20:27,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:27,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:27,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:20:27,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:27,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1475763674, now seen corresponding path program 1 times [2022-01-10 13:20:27,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:27,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780850383] [2022-01-10 13:20:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:27,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:27,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:27,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780850383] [2022-01-10 13:20:27,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780850383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:27,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:27,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:20:27,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884588472] [2022-01-10 13:20:27,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:27,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:20:27,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:27,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:20:27,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:20:27,274 INFO L87 Difference]: Start difference. First operand 471 states and 779 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:27,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:27,462 INFO L93 Difference]: Finished difference Result 1345 states and 2216 transitions. [2022-01-10 13:20:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:20:27,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-10 13:20:27,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:27,465 INFO L225 Difference]: With dead ends: 1345 [2022-01-10 13:20:27,466 INFO L226 Difference]: Without dead ends: 921 [2022-01-10 13:20:27,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:20:27,468 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1531 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:27,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 1068 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:20:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-01-10 13:20:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 919. [2022-01-10 13:20:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 918 states have (on average 1.6481481481481481) internal successors, (1513), 918 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1513 transitions. [2022-01-10 13:20:27,512 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1513 transitions. Word has length 121 [2022-01-10 13:20:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:27,512 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1513 transitions. [2022-01-10 13:20:27,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1513 transitions. [2022-01-10 13:20:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 13:20:27,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:27,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:27,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:20:27,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:27,515 INFO L85 PathProgramCache]: Analyzing trace with hash 850063870, now seen corresponding path program 1 times [2022-01-10 13:20:27,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:27,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650887741] [2022-01-10 13:20:27,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:27,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:27,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:27,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650887741] [2022-01-10 13:20:27,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650887741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:27,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:27,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:20:27,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112826974] [2022-01-10 13:20:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:27,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:20:27,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:20:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:20:27,658 INFO L87 Difference]: Start difference. First operand 919 states and 1513 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:27,727 INFO L93 Difference]: Finished difference Result 1436 states and 2388 transitions. [2022-01-10 13:20:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:20:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 13:20:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:27,734 INFO L225 Difference]: With dead ends: 1436 [2022-01-10 13:20:27,734 INFO L226 Difference]: Without dead ends: 1152 [2022-01-10 13:20:27,736 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 [2022-01-10 13:20:27,738 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 226 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:27,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1257 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-01-10 13:20:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1150. [2022-01-10 13:20:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.6553524804177546) internal successors, (1902), 1149 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1902 transitions. [2022-01-10 13:20:27,817 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1902 transitions. Word has length 122 [2022-01-10 13:20:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:27,818 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1902 transitions. [2022-01-10 13:20:27,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1902 transitions. [2022-01-10 13:20:27,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 13:20:27,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:27,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:27,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:20:27,821 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:27,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:27,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1629416733, now seen corresponding path program 1 times [2022-01-10 13:20:27,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:27,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43639065] [2022-01-10 13:20:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:27,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:27,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:27,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43639065] [2022-01-10 13:20:27,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43639065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:27,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:27,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:20:27,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919812638] [2022-01-10 13:20:27,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:27,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:20:27,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:20:27,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:20:27,996 INFO L87 Difference]: Start difference. First operand 1150 states and 1902 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:28,097 INFO L93 Difference]: Finished difference Result 2177 states and 3635 transitions. [2022-01-10 13:20:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:20:28,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 13:20:28,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:28,103 INFO L225 Difference]: With dead ends: 2177 [2022-01-10 13:20:28,103 INFO L226 Difference]: Without dead ends: 1408 [2022-01-10 13:20:28,105 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 [2022-01-10 13:20:28,106 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 234 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1094 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 [2022-01-10 13:20:28,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 1094 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:28,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2022-01-10 13:20:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1392. [2022-01-10 13:20:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 1.6578001437814522) internal successors, (2306), 1391 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2306 transitions. [2022-01-10 13:20:28,179 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2306 transitions. Word has length 122 [2022-01-10 13:20:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:28,180 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 2306 transitions. [2022-01-10 13:20:28,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2306 transitions. [2022-01-10 13:20:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 13:20:28,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:28,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:28,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:20:28,184 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1157319167, now seen corresponding path program 1 times [2022-01-10 13:20:28,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:28,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102085359] [2022-01-10 13:20:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:28,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:28,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102085359] [2022-01-10 13:20:28,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102085359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:28,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:28,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:20:28,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264036215] [2022-01-10 13:20:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:28,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:20:28,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:20:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:20:28,365 INFO L87 Difference]: Start difference. First operand 1392 states and 2306 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:28,671 INFO L93 Difference]: Finished difference Result 5457 states and 9031 transitions. [2022-01-10 13:20:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:20:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-10 13:20:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:28,684 INFO L225 Difference]: With dead ends: 5457 [2022-01-10 13:20:28,685 INFO L226 Difference]: Without dead ends: 4077 [2022-01-10 13:20:28,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:20:28,689 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 1493 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:28,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 2332 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:20:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2022-01-10 13:20:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 2736. [2022-01-10 13:20:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2735 states have (on average 1.6486288848263253) internal successors, (4509), 2735 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4509 transitions. [2022-01-10 13:20:28,860 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4509 transitions. Word has length 123 [2022-01-10 13:20:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:28,861 INFO L470 AbstractCegarLoop]: Abstraction has 2736 states and 4509 transitions. [2022-01-10 13:20:28,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4509 transitions. [2022-01-10 13:20:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 13:20:28,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:28,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:28,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:20:28,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash 437754570, now seen corresponding path program 1 times [2022-01-10 13:20:28,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:28,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941715959] [2022-01-10 13:20:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:28,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:28,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:28,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941715959] [2022-01-10 13:20:28,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941715959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:28,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:28,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:20:28,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547290347] [2022-01-10 13:20:28,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:28,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:20:28,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:28,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:20:28,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:20:28,926 INFO L87 Difference]: Start difference. First operand 2736 states and 4509 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) [2022-01-10 13:20:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:29,202 INFO L93 Difference]: Finished difference Result 8151 states and 13429 transitions. [2022-01-10 13:20:29,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:20:29,203 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 [2022-01-10 13:20:29,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:29,220 INFO L225 Difference]: With dead ends: 8151 [2022-01-10 13:20:29,220 INFO L226 Difference]: Without dead ends: 5444 [2022-01-10 13:20:29,225 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 [2022-01-10 13:20:29,226 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 538 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:29,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 1638 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2022-01-10 13:20:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 2750. [2022-01-10 13:20:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2749 states have (on average 1.6464168788650417) internal successors, (4526), 2749 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) [2022-01-10 13:20:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 4526 transitions. [2022-01-10 13:20:29,444 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 4526 transitions. Word has length 125 [2022-01-10 13:20:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:29,445 INFO L470 AbstractCegarLoop]: Abstraction has 2750 states and 4526 transitions. [2022-01-10 13:20:29,445 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) [2022-01-10 13:20:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 4526 transitions. [2022-01-10 13:20:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:20:29,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:29,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:29,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:20:29,448 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:29,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:29,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1759240502, now seen corresponding path program 1 times [2022-01-10 13:20:29,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:29,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831952345] [2022-01-10 13:20:29,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:29,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:29,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:29,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831952345] [2022-01-10 13:20:29,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831952345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:29,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:29,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:20:29,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592267176] [2022-01-10 13:20:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:29,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:20:29,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:20:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:20:29,612 INFO L87 Difference]: Start difference. First operand 2750 states and 4526 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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) [2022-01-10 13:20:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:30,037 INFO L93 Difference]: Finished difference Result 7921 states and 13028 transitions. [2022-01-10 13:20:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:20:30,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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 [2022-01-10 13:20:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:30,054 INFO L225 Difference]: With dead ends: 7921 [2022-01-10 13:20:30,054 INFO L226 Difference]: Without dead ends: 5291 [2022-01-10 13:20:30,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:20:30,060 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 1291 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:30,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 1296 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:20:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2022-01-10 13:20:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 5289. [2022-01-10 13:20:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 5288 states have (on average 1.6376701966717095) internal successors, (8660), 5288 states have internal predecessors, (8660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 8660 transitions. [2022-01-10 13:20:30,395 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 8660 transitions. Word has length 127 [2022-01-10 13:20:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:30,395 INFO L470 AbstractCegarLoop]: Abstraction has 5289 states and 8660 transitions. [2022-01-10 13:20:30,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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) [2022-01-10 13:20:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 8660 transitions. [2022-01-10 13:20:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:20:30,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:30,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:30,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:20:30,400 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:30,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash 588537107, now seen corresponding path program 1 times [2022-01-10 13:20:30,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:30,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845483471] [2022-01-10 13:20:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:30,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:30,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:30,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845483471] [2022-01-10 13:20:30,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845483471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:30,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:30,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:20:30,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172310519] [2022-01-10 13:20:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:30,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:20:30,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:20:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:20:30,475 INFO L87 Difference]: Start difference. First operand 5289 states and 8660 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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) [2022-01-10 13:20:31,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:31,306 INFO L93 Difference]: Finished difference Result 18977 states and 30923 transitions. [2022-01-10 13:20:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:20:31,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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 [2022-01-10 13:20:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:31,350 INFO L225 Difference]: With dead ends: 18977 [2022-01-10 13:20:31,350 INFO L226 Difference]: Without dead ends: 14247 [2022-01-10 13:20:31,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:20:31,361 INFO L933 BasicCegarLoop]: 1262 mSDtfsCounter, 1270 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:31,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 2759 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14247 states. [2022-01-10 13:20:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14247 to 5777. [2022-01-10 13:20:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5777 states, 5776 states have (on average 1.6426592797783934) internal successors, (9488), 5776 states have internal predecessors, (9488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 9488 transitions. [2022-01-10 13:20:31,826 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 9488 transitions. Word has length 127 [2022-01-10 13:20:31,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:31,826 INFO L470 AbstractCegarLoop]: Abstraction has 5777 states and 9488 transitions. [2022-01-10 13:20:31,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 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) [2022-01-10 13:20:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 9488 transitions. [2022-01-10 13:20:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 13:20:31,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:31,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:31,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:20:31,832 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:31,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1692902755, now seen corresponding path program 1 times [2022-01-10 13:20:31,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:31,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910792888] [2022-01-10 13:20:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:31,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:32,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:32,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910792888] [2022-01-10 13:20:32,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910792888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:32,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:32,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:20:32,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445792739] [2022-01-10 13:20:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:32,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:20:32,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:20:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:20:32,025 INFO L87 Difference]: Start difference. First operand 5777 states and 9488 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:32,854 INFO L93 Difference]: Finished difference Result 13086 states and 21646 transitions. [2022-01-10 13:20:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:20:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-01-10 13:20:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:32,877 INFO L225 Difference]: With dead ends: 13086 [2022-01-10 13:20:32,877 INFO L226 Difference]: Without dead ends: 9284 [2022-01-10 13:20:32,883 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 [2022-01-10 13:20:32,885 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 214 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:32,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1087 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9284 states. [2022-01-10 13:20:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9284 to 9282. [2022-01-10 13:20:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9282 states, 9281 states have (on average 1.6462665661027907) internal successors, (15279), 9281 states have internal predecessors, (15279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 15279 transitions. [2022-01-10 13:20:33,611 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 15279 transitions. Word has length 129 [2022-01-10 13:20:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:33,611 INFO L470 AbstractCegarLoop]: Abstraction has 9282 states and 15279 transitions. [2022-01-10 13:20:33,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 15279 transitions. [2022-01-10 13:20:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 13:20:33,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:33,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:33,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:20:33,619 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1345075797, now seen corresponding path program 1 times [2022-01-10 13:20:33,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:33,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432160186] [2022-01-10 13:20:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:33,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:33,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:33,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432160186] [2022-01-10 13:20:33,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432160186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:33,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:33,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:20:33,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686564113] [2022-01-10 13:20:33,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:33,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:20:33,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:33,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:20:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:20:33,725 INFO L87 Difference]: Start difference. First operand 9282 states and 15279 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:35,254 INFO L93 Difference]: Finished difference Result 25922 states and 42508 transitions. [2022-01-10 13:20:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:20:35,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 13:20:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:35,294 INFO L225 Difference]: With dead ends: 25922 [2022-01-10 13:20:35,295 INFO L226 Difference]: Without dead ends: 17701 [2022-01-10 13:20:35,309 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 [2022-01-10 13:20:35,310 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 417 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:35,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 1577 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:35,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17701 states. [2022-01-10 13:20:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17701 to 17699. [2022-01-10 13:20:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17699 states, 17698 states have (on average 1.6347609899423663) internal successors, (28932), 17698 states have internal predecessors, (28932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17699 states to 17699 states and 28932 transitions. [2022-01-10 13:20:36,792 INFO L78 Accepts]: Start accepts. Automaton has 17699 states and 28932 transitions. Word has length 132 [2022-01-10 13:20:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:36,793 INFO L470 AbstractCegarLoop]: Abstraction has 17699 states and 28932 transitions. [2022-01-10 13:20:36,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17699 states and 28932 transitions. [2022-01-10 13:20:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 13:20:36,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:36,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:36,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:20:36,803 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:36,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1664148109, now seen corresponding path program 1 times [2022-01-10 13:20:36,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:36,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101181018] [2022-01-10 13:20:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:36,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:36,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:36,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101181018] [2022-01-10 13:20:36,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101181018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:36,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:36,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:20:36,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580322832] [2022-01-10 13:20:36,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:36,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:20:36,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:20:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:20:36,850 INFO L87 Difference]: Start difference. First operand 17699 states and 28932 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:38,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:38,761 INFO L93 Difference]: Finished difference Result 35716 states and 58256 transitions. [2022-01-10 13:20:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:20:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 13:20:38,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:38,820 INFO L225 Difference]: With dead ends: 35716 [2022-01-10 13:20:38,820 INFO L226 Difference]: Without dead ends: 26335 [2022-01-10 13:20:38,835 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 [2022-01-10 13:20:38,836 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 538 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:38,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 1304 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26335 states. [2022-01-10 13:20:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26335 to 17699. [2022-01-10 13:20:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17699 states, 17698 states have (on average 1.6341959543451237) internal successors, (28922), 17698 states have internal predecessors, (28922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17699 states to 17699 states and 28922 transitions. [2022-01-10 13:20:40,531 INFO L78 Accepts]: Start accepts. Automaton has 17699 states and 28922 transitions. Word has length 132 [2022-01-10 13:20:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:40,531 INFO L470 AbstractCegarLoop]: Abstraction has 17699 states and 28922 transitions. [2022-01-10 13:20:40,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 17699 states and 28922 transitions. [2022-01-10 13:20:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 13:20:40,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:40,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:40,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:20:40,542 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:40,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1480885352, now seen corresponding path program 1 times [2022-01-10 13:20:40,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:40,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299633034] [2022-01-10 13:20:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:40,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:40,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:40,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299633034] [2022-01-10 13:20:40,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299633034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:40,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:40,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:20:40,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373313728] [2022-01-10 13:20:40,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:40,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:20:40,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:40,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:20:40,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:20:40,613 INFO L87 Difference]: Start difference. First operand 17699 states and 28922 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:44,097 INFO L93 Difference]: Finished difference Result 61734 states and 100477 transitions. [2022-01-10 13:20:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:20:44,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 13:20:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:44,192 INFO L225 Difference]: With dead ends: 61734 [2022-01-10 13:20:44,192 INFO L226 Difference]: Without dead ends: 45574 [2022-01-10 13:20:44,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:20:44,243 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 1223 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:44,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 2797 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45574 states. [2022-01-10 13:20:46,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45574 to 18551. [2022-01-10 13:20:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18551 states, 18550 states have (on average 1.6344474393530997) internal successors, (30319), 18550 states have internal predecessors, (30319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:46,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18551 states to 18551 states and 30319 transitions. [2022-01-10 13:20:46,110 INFO L78 Accepts]: Start accepts. Automaton has 18551 states and 30319 transitions. Word has length 132 [2022-01-10 13:20:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:46,110 INFO L470 AbstractCegarLoop]: Abstraction has 18551 states and 30319 transitions. [2022-01-10 13:20:46,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:46,110 INFO L276 IsEmpty]: Start isEmpty. Operand 18551 states and 30319 transitions. [2022-01-10 13:20:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 13:20:46,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:46,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:46,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:20:46,122 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:46,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1424704298, now seen corresponding path program 1 times [2022-01-10 13:20:46,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:46,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809135597] [2022-01-10 13:20:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:46,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:46,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:46,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809135597] [2022-01-10 13:20:46,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809135597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:46,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:46,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:20:46,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025683136] [2022-01-10 13:20:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:46,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:20:46,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:20:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:20:46,216 INFO L87 Difference]: Start difference. First operand 18551 states and 30319 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:48,643 INFO L93 Difference]: Finished difference Result 39401 states and 64883 transitions. [2022-01-10 13:20:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:20:48,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-01-10 13:20:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:48,685 INFO L225 Difference]: With dead ends: 39401 [2022-01-10 13:20:48,685 INFO L226 Difference]: Without dead ends: 25161 [2022-01-10 13:20:48,702 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 [2022-01-10 13:20:48,703 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 222 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1103 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 [2022-01-10 13:20:48,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 1103 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:20:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25161 states. [2022-01-10 13:20:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25161 to 24755. [2022-01-10 13:20:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24755 states, 24754 states have (on average 1.6300799870727962) internal successors, (40351), 24754 states have internal predecessors, (40351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24755 states to 24755 states and 40351 transitions. [2022-01-10 13:20:50,905 INFO L78 Accepts]: Start accepts. Automaton has 24755 states and 40351 transitions. Word has length 133 [2022-01-10 13:20:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:20:50,906 INFO L470 AbstractCegarLoop]: Abstraction has 24755 states and 40351 transitions. [2022-01-10 13:20:50,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:50,906 INFO L276 IsEmpty]: Start isEmpty. Operand 24755 states and 40351 transitions. [2022-01-10 13:20:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 13:20:50,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:20:50,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:20:50,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:20:50,918 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:20:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:20:50,918 INFO L85 PathProgramCache]: Analyzing trace with hash 33090905, now seen corresponding path program 1 times [2022-01-10 13:20:50,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:20:50,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290688130] [2022-01-10 13:20:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:20:50,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:20:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:20:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:20:51,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:20:51,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290688130] [2022-01-10 13:20:51,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290688130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:20:51,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:20:51,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:20:51,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880854856] [2022-01-10 13:20:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:20:51,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:20:51,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:20:51,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:20:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:20:51,056 INFO L87 Difference]: Start difference. First operand 24755 states and 40351 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:20:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:20:55,667 INFO L93 Difference]: Finished difference Result 72179 states and 117639 transitions. [2022-01-10 13:20:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:20:55,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-01-10 13:20:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:20:55,742 INFO L225 Difference]: With dead ends: 72179 [2022-01-10 13:20:55,743 INFO L226 Difference]: Without dead ends: 48340 [2022-01-10 13:20:55,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:20:55,767 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1430 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:20:55,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1430 Valid, 1087 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:20:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48340 states. [2022-01-10 13:21:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48340 to 48338. [2022-01-10 13:21:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48338 states, 48337 states have (on average 1.6248629414320293) internal successors, (78541), 48337 states have internal predecessors, (78541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:21:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48338 states to 48338 states and 78541 transitions. [2022-01-10 13:21:00,704 INFO L78 Accepts]: Start accepts. Automaton has 48338 states and 78541 transitions. Word has length 133 [2022-01-10 13:21:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:21:00,704 INFO L470 AbstractCegarLoop]: Abstraction has 48338 states and 78541 transitions. [2022-01-10 13:21:00,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:21:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 48338 states and 78541 transitions. [2022-01-10 13:21:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 13:21:00,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:21:00,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:21:00,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:21:00,724 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:21:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:21:00,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1919451086, now seen corresponding path program 1 times [2022-01-10 13:21:00,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:21:00,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012552410] [2022-01-10 13:21:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:21:00,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:21:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:21:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:21:00,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:21:00,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012552410] [2022-01-10 13:21:00,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012552410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:21:00,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:21:00,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:21:00,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773981181] [2022-01-10 13:21:00,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:21:00,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:21:00,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:21:00,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:21:00,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:21:00,810 INFO L87 Difference]: Start difference. First operand 48338 states and 78541 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:21:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:21:06,517 INFO L93 Difference]: Finished difference Result 87100 states and 142333 transitions. [2022-01-10 13:21:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:21:06,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-01-10 13:21:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:21:06,619 INFO L225 Difference]: With dead ends: 87100 [2022-01-10 13:21:06,619 INFO L226 Difference]: Without dead ends: 60266 [2022-01-10 13:21:06,652 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 [2022-01-10 13:21:06,652 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 215 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:21:06,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1235 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:21:06,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60266 states. [2022-01-10 13:21:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60266 to 60264. [2022-01-10 13:21:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60264 states, 60263 states have (on average 1.625989413072698) internal successors, (97987), 60263 states have internal predecessors, (97987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:21:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60264 states to 60264 states and 97987 transitions. [2022-01-10 13:21:12,920 INFO L78 Accepts]: Start accepts. Automaton has 60264 states and 97987 transitions. Word has length 134 [2022-01-10 13:21:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:21:12,921 INFO L470 AbstractCegarLoop]: Abstraction has 60264 states and 97987 transitions. [2022-01-10 13:21:12,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:21:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 60264 states and 97987 transitions. [2022-01-10 13:21:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 13:21:12,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:21:12,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:21:12,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:21:12,935 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:21:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:21:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1453407282, now seen corresponding path program 1 times [2022-01-10 13:21:12,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:21:12,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401304887] [2022-01-10 13:21:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:21:12,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:21:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:21:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:21:13,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:21:13,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401304887] [2022-01-10 13:21:13,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401304887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:21:13,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:21:13,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:21:13,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080651266] [2022-01-10 13:21:13,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:21:13,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:21:13,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:21:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:21:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:21:13,063 INFO L87 Difference]: Start difference. First operand 60264 states and 97987 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:21:22,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:21:22,640 INFO L93 Difference]: Finished difference Result 154197 states and 249978 transitions. [2022-01-10 13:21:22,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:21:22,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-01-10 13:21:22,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:21:22,846 INFO L225 Difference]: With dead ends: 154197 [2022-01-10 13:21:22,846 INFO L226 Difference]: Without dead ends: 94513 [2022-01-10 13:21:22,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:21:22,901 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1803 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:21:22,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 2295 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:21:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94513 states.