/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:59:05,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:59:05,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:59:05,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:59:05,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:59:05,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:59:05,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:59:05,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:59:05,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:59:05,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:59:05,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:59:05,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:59:05,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:59:05,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:59:05,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:59:05,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:59:05,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:59:05,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:59:05,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:59:05,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:59:05,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:59:05,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:59:05,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:59:05,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:59:05,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:59:05,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:59:05,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:59:05,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:59:05,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:59:05,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:59:05,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:59:05,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:59:05,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:59:05,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:59:05,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:59:05,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:59:05,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:59:05,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:59:05,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:59:05,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:59:05,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:59:05,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:59:05,483 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:59:05,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:59:05,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:59:05,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:59:05,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:59:05,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:59:05,484 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:59:05,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:59:05,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:59:05,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:59:05,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:59:05,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:59:05,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:59:05,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:59:05,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:59:05,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:59:05,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:59:05,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:59:05,487 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:59:05,487 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:59:05,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:59:05,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:59:05,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:59:05,488 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:59:05,488 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:59:05,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:59:05,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:59:05,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:59:05,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:59:05,694 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:59:05,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-11 00:59:05,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238a13e95/d5ffcb85de5b482ab06c7aa8178fb02d/FLAGdd375e6de [2022-01-11 00:59:06,232 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:59:06,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-11 00:59:06,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238a13e95/d5ffcb85de5b482ab06c7aa8178fb02d/FLAGdd375e6de [2022-01-11 00:59:06,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238a13e95/d5ffcb85de5b482ab06c7aa8178fb02d [2022-01-11 00:59:06,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:59:06,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:59:06,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:59:06,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:59:06,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:59:06,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:59:06" (1/1) ... [2022-01-11 00:59:06,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a76b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:06, skipping insertion in model container [2022-01-11 00:59:06,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:59:06" (1/1) ... [2022-01-11 00:59:06,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:59:06,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:59:06,683 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.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[26790,26803] [2022-01-11 00:59:06,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:59:06,827 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:59:06,979 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.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[26790,26803] [2022-01-11 00:59:07,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:59:07,062 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:59:07,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07 WrapperNode [2022-01-11 00:59:07,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:59:07,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:59:07,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:59:07,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:59:07,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,167 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2381 [2022-01-11 00:59:07,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:59:07,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:59:07,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:59:07,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:59:07,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:59:07,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:59:07,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:59:07,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:59:07,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (1/1) ... [2022-01-11 00:59:07,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:59:07,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:59:07,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:59:07,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:59:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:59:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:59:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:59:07,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:59:07,447 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:59:07,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:59:08,718 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:59:08,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:59:08,736 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:59:08,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:59:08 BoogieIcfgContainer [2022-01-11 00:59:08,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:59:08,739 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:59:08,739 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:59:08,740 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:59:08,742 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:59:08" (1/1) ... [2022-01-11 00:59:09,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:59:09 BasicIcfg [2022-01-11 00:59:09,431 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:59:09,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:59:09,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:59:09,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:59:09,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:59:06" (1/4) ... [2022-01-11 00:59:09,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c76d6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:59:09, skipping insertion in model container [2022-01-11 00:59:09,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:59:07" (2/4) ... [2022-01-11 00:59:09,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c76d6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:59:09, skipping insertion in model container [2022-01-11 00:59:09,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:59:08" (3/4) ... [2022-01-11 00:59:09,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c76d6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:59:09, skipping insertion in model container [2022-01-11 00:59:09,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:59:09" (4/4) ... [2022-01-11 00:59:09,438 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 00:59:09,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:59:09,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:59:09,478 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:59:09,484 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:59:09,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:59:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 647 states, 645 states have (on average 1.7829457364341086) internal successors, (1150), 646 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-01-11 00:59:09,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:09,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:09,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:09,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1410166028, now seen corresponding path program 1 times [2022-01-11 00:59:09,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:09,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085154712] [2022-01-11 00:59:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:09,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:10,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:10,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085154712] [2022-01-11 00:59:10,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085154712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:10,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:10,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:59:10,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726910141] [2022-01-11 00:59:10,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:10,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:59:10,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:59:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:59:10,204 INFO L87 Difference]: Start difference. First operand has 647 states, 645 states have (on average 1.7829457364341086) internal successors, (1150), 646 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:10,405 INFO L93 Difference]: Finished difference Result 1867 states and 3319 transitions. [2022-01-11 00:59:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:59:10,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2022-01-11 00:59:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:10,428 INFO L225 Difference]: With dead ends: 1867 [2022-01-11 00:59:10,428 INFO L226 Difference]: Without dead ends: 1261 [2022-01-11 00:59:10,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:10,439 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 2774 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:10,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2774 Valid, 2701 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:59:10,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-01-11 00:59:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1259. [2022-01-11 00:59:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.568362480127186) internal successors, (1973), 1258 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1973 transitions. [2022-01-11 00:59:10,541 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1973 transitions. Word has length 250 [2022-01-11 00:59:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:10,543 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 1973 transitions. [2022-01-11 00:59:10,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1973 transitions. [2022-01-11 00:59:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-11 00:59:10,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:10,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:10,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:59:10,548 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash 960193895, now seen corresponding path program 1 times [2022-01-11 00:59:10,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:10,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567816277] [2022-01-11 00:59:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:10,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:10,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:10,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567816277] [2022-01-11 00:59:10,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567816277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:10,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:10,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:59:10,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665886105] [2022-01-11 00:59:10,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:10,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:59:10,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:59:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:10,858 INFO L87 Difference]: Start difference. First operand 1259 states and 1973 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:11,085 INFO L93 Difference]: Finished difference Result 4919 states and 7687 transitions. [2022-01-11 00:59:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:59:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2022-01-11 00:59:11,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:11,102 INFO L225 Difference]: With dead ends: 4919 [2022-01-11 00:59:11,102 INFO L226 Difference]: Without dead ends: 3672 [2022-01-11 00:59:11,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:59:11,108 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 3967 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:11,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3967 Valid, 3625 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:59:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2022-01-11 00:59:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2464. [2022-01-11 00:59:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 1.5562322371092163) internal successors, (3833), 2463 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3833 transitions. [2022-01-11 00:59:11,257 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3833 transitions. Word has length 252 [2022-01-11 00:59:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:11,259 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 3833 transitions. [2022-01-11 00:59:11,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3833 transitions. [2022-01-11 00:59:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-11 00:59:11,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:11,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:11,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:59:11,271 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1579256356, now seen corresponding path program 1 times [2022-01-11 00:59:11,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:11,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93173629] [2022-01-11 00:59:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:11,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:11,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:11,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93173629] [2022-01-11 00:59:11,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93173629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:11,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:11,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:11,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927749302] [2022-01-11 00:59:11,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:11,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:11,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:11,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:11,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:11,379 INFO L87 Difference]: Start difference. First operand 2464 states and 3833 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:11,577 INFO L93 Difference]: Finished difference Result 7335 states and 11401 transitions. [2022-01-11 00:59:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:11,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2022-01-11 00:59:11,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:11,592 INFO L225 Difference]: With dead ends: 7335 [2022-01-11 00:59:11,592 INFO L226 Difference]: Without dead ends: 4900 [2022-01-11 00:59:11,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:11,596 INFO L933 BasicCegarLoop]: 2004 mSDtfsCounter, 993 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:11,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 3004 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4900 states. [2022-01-11 00:59:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4900 to 2478. [2022-01-11 00:59:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2477 states have (on average 1.5542995559144126) internal successors, (3850), 2477 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3850 transitions. [2022-01-11 00:59:11,706 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3850 transitions. Word has length 254 [2022-01-11 00:59:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:11,706 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 3850 transitions. [2022-01-11 00:59:11,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3850 transitions. [2022-01-11 00:59:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-11 00:59:11,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:11,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:11,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:59:11,711 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:11,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1826312542, now seen corresponding path program 1 times [2022-01-11 00:59:11,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:11,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649979985] [2022-01-11 00:59:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:11,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:11,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:11,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649979985] [2022-01-11 00:59:11,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649979985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:11,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:11,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:11,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18019080] [2022-01-11 00:59:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:11,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:11,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:11,840 INFO L87 Difference]: Start difference. First operand 2478 states and 3850 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:12,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:12,045 INFO L93 Difference]: Finished difference Result 5060 states and 7902 transitions. [2022-01-11 00:59:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:12,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2022-01-11 00:59:12,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:12,057 INFO L225 Difference]: With dead ends: 5060 [2022-01-11 00:59:12,057 INFO L226 Difference]: Without dead ends: 3369 [2022-01-11 00:59:12,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:12,065 INFO L933 BasicCegarLoop]: 1370 mSDtfsCounter, 547 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:12,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 2169 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2022-01-11 00:59:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 2991. [2022-01-11 00:59:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 1.571571906354515) internal successors, (4699), 2990 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 4699 transitions. [2022-01-11 00:59:12,237 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 4699 transitions. Word has length 256 [2022-01-11 00:59:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:12,238 INFO L470 AbstractCegarLoop]: Abstraction has 2991 states and 4699 transitions. [2022-01-11 00:59:12,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 4699 transitions. [2022-01-11 00:59:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-11 00:59:12,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:12,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:12,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:59:12,243 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:12,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:12,243 INFO L85 PathProgramCache]: Analyzing trace with hash 811565705, now seen corresponding path program 1 times [2022-01-11 00:59:12,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:12,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416339580] [2022-01-11 00:59:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:12,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:12,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:12,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416339580] [2022-01-11 00:59:12,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416339580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:12,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:12,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:59:12,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704094647] [2022-01-11 00:59:12,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:12,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:59:12,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:59:12,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:12,422 INFO L87 Difference]: Start difference. First operand 2991 states and 4699 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:12,921 INFO L93 Difference]: Finished difference Result 11542 states and 18097 transitions. [2022-01-11 00:59:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:59:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2022-01-11 00:59:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:12,946 INFO L225 Difference]: With dead ends: 11542 [2022-01-11 00:59:12,946 INFO L226 Difference]: Without dead ends: 8592 [2022-01-11 00:59:12,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:59:12,952 INFO L933 BasicCegarLoop]: 2130 mSDtfsCounter, 2823 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2823 SdHoareTripleChecker+Valid, 4959 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:12,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2823 Valid, 4959 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:59:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-01-11 00:59:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 5727. [2022-01-11 00:59:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5727 states, 5726 states have (on average 1.5588543485853998) internal successors, (8926), 5726 states have internal predecessors, (8926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5727 states to 5727 states and 8926 transitions. [2022-01-11 00:59:13,310 INFO L78 Accepts]: Start accepts. Automaton has 5727 states and 8926 transitions. Word has length 256 [2022-01-11 00:59:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:13,311 INFO L470 AbstractCegarLoop]: Abstraction has 5727 states and 8926 transitions. [2022-01-11 00:59:13,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5727 states and 8926 transitions. [2022-01-11 00:59:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-11 00:59:13,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:13,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:13,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:59:13,322 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:13,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash 427994259, now seen corresponding path program 1 times [2022-01-11 00:59:13,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:13,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23200518] [2022-01-11 00:59:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:13,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:13,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:13,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23200518] [2022-01-11 00:59:13,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23200518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:13,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:13,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:59:13,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874146213] [2022-01-11 00:59:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:13,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:59:13,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:13,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:59:13,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:59:13,453 INFO L87 Difference]: Start difference. First operand 5727 states and 8926 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:14,277 INFO L93 Difference]: Finished difference Result 20663 states and 31992 transitions. [2022-01-11 00:59:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:59:14,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2022-01-11 00:59:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:14,312 INFO L225 Difference]: With dead ends: 20663 [2022-01-11 00:59:14,312 INFO L226 Difference]: Without dead ends: 15480 [2022-01-11 00:59:14,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:14,321 INFO L933 BasicCegarLoop]: 1645 mSDtfsCounter, 2627 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 4498 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:14,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2627 Valid, 4498 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15480 states. [2022-01-11 00:59:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15480 to 6188. [2022-01-11 00:59:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 6187 states have (on average 1.5684499757556165) internal successors, (9704), 6187 states have internal predecessors, (9704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 9704 transitions. [2022-01-11 00:59:14,754 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 9704 transitions. Word has length 256 [2022-01-11 00:59:14,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:14,754 INFO L470 AbstractCegarLoop]: Abstraction has 6188 states and 9704 transitions. [2022-01-11 00:59:14,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 9704 transitions. [2022-01-11 00:59:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-01-11 00:59:14,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:14,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:14,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:59:14,762 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:14,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1351822892, now seen corresponding path program 1 times [2022-01-11 00:59:14,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:14,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955067466] [2022-01-11 00:59:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:14,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:14,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955067466] [2022-01-11 00:59:14,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955067466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:14,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:14,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:59:14,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124570934] [2022-01-11 00:59:14,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:14,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:59:14,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:59:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:59:14,875 INFO L87 Difference]: Start difference. First operand 6188 states and 9704 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:15,823 INFO L93 Difference]: Finished difference Result 21508 states and 33401 transitions. [2022-01-11 00:59:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:59:15,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 258 [2022-01-11 00:59:15,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:15,852 INFO L225 Difference]: With dead ends: 21508 [2022-01-11 00:59:15,853 INFO L226 Difference]: Without dead ends: 16293 [2022-01-11 00:59:15,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:15,862 INFO L933 BasicCegarLoop]: 1993 mSDtfsCounter, 2474 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 4848 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:15,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2474 Valid, 4848 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16293 states. [2022-01-11 00:59:16,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16293 to 6988. [2022-01-11 00:59:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6988 states, 6987 states have (on average 1.5827966222985546) internal successors, (11059), 6987 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 11059 transitions. [2022-01-11 00:59:16,397 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 11059 transitions. Word has length 258 [2022-01-11 00:59:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:16,397 INFO L470 AbstractCegarLoop]: Abstraction has 6988 states and 11059 transitions. [2022-01-11 00:59:16,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 11059 transitions. [2022-01-11 00:59:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-11 00:59:16,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:16,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:16,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:59:16,406 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1400095007, now seen corresponding path program 1 times [2022-01-11 00:59:16,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:16,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477306263] [2022-01-11 00:59:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:16,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:16,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:16,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477306263] [2022-01-11 00:59:16,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477306263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:16,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:16,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:16,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090615935] [2022-01-11 00:59:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:16,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:16,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:16,487 INFO L87 Difference]: Start difference. First operand 6988 states and 11059 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:17,092 INFO L93 Difference]: Finished difference Result 17292 states and 26838 transitions. [2022-01-11 00:59:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:17,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2022-01-11 00:59:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:17,111 INFO L225 Difference]: With dead ends: 17292 [2022-01-11 00:59:17,111 INFO L226 Difference]: Without dead ends: 12165 [2022-01-11 00:59:17,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:17,117 INFO L933 BasicCegarLoop]: 1863 mSDtfsCounter, 855 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:17,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 2859 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12165 states. [2022-01-11 00:59:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12165 to 7078. [2022-01-11 00:59:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7078 states, 7077 states have (on average 1.57637416984598) internal successors, (11156), 7077 states have internal predecessors, (11156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7078 states to 7078 states and 11156 transitions. [2022-01-11 00:59:17,523 INFO L78 Accepts]: Start accepts. Automaton has 7078 states and 11156 transitions. Word has length 260 [2022-01-11 00:59:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:17,523 INFO L470 AbstractCegarLoop]: Abstraction has 7078 states and 11156 transitions. [2022-01-11 00:59:17,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7078 states and 11156 transitions. [2022-01-11 00:59:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-11 00:59:17,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:17,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:17,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:59:17,531 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:17,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1445032381, now seen corresponding path program 1 times [2022-01-11 00:59:17,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:17,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848857189] [2022-01-11 00:59:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:17,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:17,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:17,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848857189] [2022-01-11 00:59:17,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848857189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:17,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:17,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:17,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937366947] [2022-01-11 00:59:17,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:17,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:17,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:17,691 INFO L87 Difference]: Start difference. First operand 7078 states and 11156 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:18,408 INFO L93 Difference]: Finished difference Result 17929 states and 27770 transitions. [2022-01-11 00:59:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2022-01-11 00:59:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:18,426 INFO L225 Difference]: With dead ends: 17929 [2022-01-11 00:59:18,427 INFO L226 Difference]: Without dead ends: 12661 [2022-01-11 00:59:18,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:18,433 INFO L933 BasicCegarLoop]: 1810 mSDtfsCounter, 864 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:18,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 2770 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12661 states. [2022-01-11 00:59:19,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12661 to 12659. [2022-01-11 00:59:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12659 states, 12658 states have (on average 1.5508769157844842) internal successors, (19631), 12658 states have internal predecessors, (19631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12659 states to 12659 states and 19631 transitions. [2022-01-11 00:59:19,298 INFO L78 Accepts]: Start accepts. Automaton has 12659 states and 19631 transitions. Word has length 261 [2022-01-11 00:59:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:19,298 INFO L470 AbstractCegarLoop]: Abstraction has 12659 states and 19631 transitions. [2022-01-11 00:59:19,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 12659 states and 19631 transitions. [2022-01-11 00:59:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-01-11 00:59:19,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:19,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:19,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:59:19,316 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1846803219, now seen corresponding path program 1 times [2022-01-11 00:59:19,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:19,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133626973] [2022-01-11 00:59:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:19,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:19,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:19,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133626973] [2022-01-11 00:59:19,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133626973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:19,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:19,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:59:19,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872043808] [2022-01-11 00:59:19,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:19,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:59:19,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:59:19,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:59:19,502 INFO L87 Difference]: Start difference. First operand 12659 states and 19631 transitions. Second operand has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:20,977 INFO L93 Difference]: Finished difference Result 36323 states and 56089 transitions. [2022-01-11 00:59:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:59:20,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2022-01-11 00:59:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:21,021 INFO L225 Difference]: With dead ends: 36323 [2022-01-11 00:59:21,021 INFO L226 Difference]: Without dead ends: 24444 [2022-01-11 00:59:21,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:21,045 INFO L933 BasicCegarLoop]: 1405 mSDtfsCounter, 2354 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:21,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2354 Valid, 2355 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:59:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24444 states. [2022-01-11 00:59:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24444 to 24442. [2022-01-11 00:59:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24442 states, 24441 states have (on average 1.538071273679473) internal successors, (37592), 24441 states have internal predecessors, (37592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:22,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24442 states to 24442 states and 37592 transitions. [2022-01-11 00:59:22,908 INFO L78 Accepts]: Start accepts. Automaton has 24442 states and 37592 transitions. Word has length 262 [2022-01-11 00:59:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:22,909 INFO L470 AbstractCegarLoop]: Abstraction has 24442 states and 37592 transitions. [2022-01-11 00:59:22,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 24442 states and 37592 transitions. [2022-01-11 00:59:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-11 00:59:22,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:22,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:22,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:59:22,938 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:22,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:22,939 INFO L85 PathProgramCache]: Analyzing trace with hash -639540972, now seen corresponding path program 1 times [2022-01-11 00:59:22,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:22,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737973032] [2022-01-11 00:59:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:22,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:23,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:23,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737973032] [2022-01-11 00:59:23,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737973032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:23,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:23,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:59:23,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959448876] [2022-01-11 00:59:23,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:23,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:59:23,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:59:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:23,108 INFO L87 Difference]: Start difference. First operand 24442 states and 37592 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:25,827 INFO L93 Difference]: Finished difference Result 64549 states and 98999 transitions. [2022-01-11 00:59:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:59:25,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2022-01-11 00:59:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:25,894 INFO L225 Difference]: With dead ends: 64549 [2022-01-11 00:59:25,895 INFO L226 Difference]: Without dead ends: 40544 [2022-01-11 00:59:25,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:59:25,931 INFO L933 BasicCegarLoop]: 1372 mSDtfsCounter, 4378 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4378 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:25,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4378 Valid, 3281 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:59:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40544 states. [2022-01-11 00:59:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40544 to 26102. [2022-01-11 00:59:28,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26102 states, 26101 states have (on average 1.5471054748860198) internal successors, (40381), 26101 states have internal predecessors, (40381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26102 states to 26102 states and 40381 transitions. [2022-01-11 00:59:28,382 INFO L78 Accepts]: Start accepts. Automaton has 26102 states and 40381 transitions. Word has length 264 [2022-01-11 00:59:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:28,383 INFO L470 AbstractCegarLoop]: Abstraction has 26102 states and 40381 transitions. [2022-01-11 00:59:28,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 26102 states and 40381 transitions. [2022-01-11 00:59:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-11 00:59:28,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:28,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:28,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:59:28,409 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1688420961, now seen corresponding path program 1 times [2022-01-11 00:59:28,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:28,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960931489] [2022-01-11 00:59:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:28,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:28,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:28,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960931489] [2022-01-11 00:59:28,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960931489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:28,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:28,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:28,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327111344] [2022-01-11 00:59:28,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:28,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:28,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:28,495 INFO L87 Difference]: Start difference. First operand 26102 states and 40381 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:31,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:31,958 INFO L93 Difference]: Finished difference Result 76375 states and 117879 transitions. [2022-01-11 00:59:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:31,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 266 [2022-01-11 00:59:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:32,035 INFO L225 Difference]: With dead ends: 76375 [2022-01-11 00:59:32,035 INFO L226 Difference]: Without dead ends: 51282 [2022-01-11 00:59:32,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:32,059 INFO L933 BasicCegarLoop]: 1963 mSDtfsCounter, 957 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:32,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 2960 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51282 states. [2022-01-11 00:59:34,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51282 to 26466. [2022-01-11 00:59:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26466 states, 26465 states have (on average 1.542187795201209) internal successors, (40814), 26465 states have internal predecessors, (40814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26466 states to 26466 states and 40814 transitions. [2022-01-11 00:59:34,504 INFO L78 Accepts]: Start accepts. Automaton has 26466 states and 40814 transitions. Word has length 266 [2022-01-11 00:59:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:34,504 INFO L470 AbstractCegarLoop]: Abstraction has 26466 states and 40814 transitions. [2022-01-11 00:59:34,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 26466 states and 40814 transitions. [2022-01-11 00:59:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-01-11 00:59:34,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:34,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:34,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:59:34,527 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:34,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 934804329, now seen corresponding path program 1 times [2022-01-11 00:59:34,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:34,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712138947] [2022-01-11 00:59:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:34,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:34,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:34,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712138947] [2022-01-11 00:59:34,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712138947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:34,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:34,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:34,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893108235] [2022-01-11 00:59:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:34,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:34,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:34,634 INFO L87 Difference]: Start difference. First operand 26466 states and 40814 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:37,605 INFO L93 Difference]: Finished difference Result 51658 states and 80448 transitions. [2022-01-11 00:59:37,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:37,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 267 [2022-01-11 00:59:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:37,659 INFO L225 Difference]: With dead ends: 51658 [2022-01-11 00:59:37,660 INFO L226 Difference]: Without dead ends: 36022 [2022-01-11 00:59:37,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:37,680 INFO L933 BasicCegarLoop]: 1353 mSDtfsCounter, 535 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:37,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 2137 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36022 states. [2022-01-11 00:59:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36022 to 33108. [2022-01-11 00:59:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33108 states, 33107 states have (on average 1.5612408252031293) internal successors, (51688), 33107 states have internal predecessors, (51688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33108 states to 33108 states and 51688 transitions. [2022-01-11 00:59:40,707 INFO L78 Accepts]: Start accepts. Automaton has 33108 states and 51688 transitions. Word has length 267 [2022-01-11 00:59:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:40,707 INFO L470 AbstractCegarLoop]: Abstraction has 33108 states and 51688 transitions. [2022-01-11 00:59:40,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 33108 states and 51688 transitions. [2022-01-11 00:59:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 00:59:40,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:40,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:40,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:59:40,729 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1336040408, now seen corresponding path program 1 times [2022-01-11 00:59:40,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:40,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709617775] [2022-01-11 00:59:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:40,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:40,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:40,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709617775] [2022-01-11 00:59:40,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709617775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:40,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:40,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:59:40,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215500509] [2022-01-11 00:59:40,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:40,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:59:40,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:59:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:59:40,823 INFO L87 Difference]: Start difference. First operand 33108 states and 51688 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:48,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:48,412 INFO L93 Difference]: Finished difference Result 117387 states and 182304 transitions. [2022-01-11 00:59:48,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:59:48,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-11 00:59:48,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:48,556 INFO L225 Difference]: With dead ends: 117387 [2022-01-11 00:59:48,556 INFO L226 Difference]: Without dead ends: 91325 [2022-01-11 00:59:48,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:48,597 INFO L933 BasicCegarLoop]: 2339 mSDtfsCounter, 2323 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 5150 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:48,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2323 Valid, 5150 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91325 states. [2022-01-11 00:59:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91325 to 39489. [2022-01-11 00:59:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39489 states, 39488 states have (on average 1.57022386547812) internal successors, (62005), 39488 states have internal predecessors, (62005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39489 states to 39489 states and 62005 transitions. [2022-01-11 00:59:52,512 INFO L78 Accepts]: Start accepts. Automaton has 39489 states and 62005 transitions. Word has length 268 [2022-01-11 00:59:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:52,513 INFO L470 AbstractCegarLoop]: Abstraction has 39489 states and 62005 transitions. [2022-01-11 00:59:52,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand 39489 states and 62005 transitions. [2022-01-11 00:59:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 00:59:52,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:52,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:52,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:59:52,555 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1066706799, now seen corresponding path program 1 times [2022-01-11 00:59:52,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:52,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030901049] [2022-01-11 00:59:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:52,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:52,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:52,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030901049] [2022-01-11 00:59:52,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030901049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:52,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:52,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:59:52,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016569446] [2022-01-11 00:59:52,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:52,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:59:52,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:52,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:59:52,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:59:52,671 INFO L87 Difference]: Start difference. First operand 39489 states and 62005 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:59,885 INFO L93 Difference]: Finished difference Result 107637 states and 167963 transitions. [2022-01-11 00:59:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:59:59,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-11 00:59:59,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:00:00,010 INFO L225 Difference]: With dead ends: 107637 [2022-01-11 01:00:00,010 INFO L226 Difference]: Without dead ends: 75119 [2022-01-11 01:00:00,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 01:00:00,044 INFO L933 BasicCegarLoop]: 1381 mSDtfsCounter, 2509 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:00:00,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2509 Valid, 2354 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:00:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75119 states. [2022-01-11 01:00:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75119 to 45421. [2022-01-11 01:00:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45421 states, 45420 states have (on average 1.57443857331572) internal successors, (71511), 45420 states have internal predecessors, (71511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:00:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45421 states to 45421 states and 71511 transitions. [2022-01-11 01:00:05,115 INFO L78 Accepts]: Start accepts. Automaton has 45421 states and 71511 transitions. Word has length 268 [2022-01-11 01:00:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:00:05,115 INFO L470 AbstractCegarLoop]: Abstraction has 45421 states and 71511 transitions. [2022-01-11 01:00:05,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:00:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 45421 states and 71511 transitions. [2022-01-11 01:00:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 01:00:05,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:00:05,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:00:05,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:00:05,155 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:00:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:00:05,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1008724526, now seen corresponding path program 1 times [2022-01-11 01:00:05,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:00:05,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737241088] [2022-01-11 01:00:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:00:05,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:00:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:00:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:00:05,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:00:05,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737241088] [2022-01-11 01:00:05,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737241088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:00:05,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:00:05,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:00:05,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202790979] [2022-01-11 01:00:05,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:00:05,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:00:05,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:00:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:00:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:00:05,299 INFO L87 Difference]: Start difference. First operand 45421 states and 71511 transitions. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)