/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:32:09,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:32:09,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:32:09,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:32:09,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:32:09,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:32:09,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:32:09,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:32:09,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:32:09,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:32:09,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:32:09,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:32:09,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:32:09,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:32:09,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:32:09,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:32:09,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:32:09,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:32:09,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:32:09,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:32:09,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:32:09,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:32:09,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:32:09,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:32:09,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:32:09,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:32:09,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:32:09,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:32:09,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:32:09,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 18:32:09,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:32:09,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:32:09,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:32:09,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:32:09,560 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:32:09,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:32:09,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:32:09,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:32:09,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:32:09,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:32:09,562 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:32:09,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:32:09,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:32:09,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:32:09,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:32:09,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:32:09,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:32:09,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:32:09,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:32:09,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:32:09,565 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:32:09,565 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:32:09,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:32:09,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:32:09,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:32:09,763 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:32:09,764 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:32:09,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2022-01-10 18:32:09,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a609ea146/732fc87dc1524807a0b88b923306fe25/FLAGcecd28f9d [2022-01-10 18:32:10,185 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:32:10,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2022-01-10 18:32:10,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a609ea146/732fc87dc1524807a0b88b923306fe25/FLAGcecd28f9d [2022-01-10 18:32:10,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a609ea146/732fc87dc1524807a0b88b923306fe25 [2022-01-10 18:32:10,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:32:10,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:32:10,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:32:10,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:32:10,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:32:10,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646e6994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10, skipping insertion in model container [2022-01-10 18:32:10,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:32:10,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:32:10,424 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/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c[12764,12777] [2022-01-10 18:32:10,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:32:10,433 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:32:10,466 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/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c[12764,12777] [2022-01-10 18:32:10,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:32:10,479 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:32:10,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10 WrapperNode [2022-01-10 18:32:10,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:32:10,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:32:10,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:32:10,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:32:10,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,524 INFO L137 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 421 [2022-01-10 18:32:10,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:32:10,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:32:10,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:32:10,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:32:10,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:32:10,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:32:10,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:32:10,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:32:10,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (1/1) ... [2022-01-10 18:32:10,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:32:10,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:32:10,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:32:10,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:32:10,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:32:10,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:32:10,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:32:10,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:32:10,716 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:32:10,717 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:32:11,141 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:32:11,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:32:11,147 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:32:11,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:32:11 BoogieIcfgContainer [2022-01-10 18:32:11,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:32:11,149 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:32:11,149 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:32:11,157 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:32:11,159 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:32:11" (1/1) ... [2022-01-10 18:32:11,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:32:11 BasicIcfg [2022-01-10 18:32:11,442 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:32:11,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:32:11,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:32:11,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:32:11,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:32:10" (1/4) ... [2022-01-10 18:32:11,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4220f01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:32:11, skipping insertion in model container [2022-01-10 18:32:11,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:32:10" (2/4) ... [2022-01-10 18:32:11,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4220f01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:32:11, skipping insertion in model container [2022-01-10 18:32:11,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:32:11" (3/4) ... [2022-01-10 18:32:11,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4220f01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:32:11, skipping insertion in model container [2022-01-10 18:32:11,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:32:11" (4/4) ... [2022-01-10 18:32:11,451 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.cTransformedIcfg [2022-01-10 18:32:11,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:32:11,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:32:11,502 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:32:11,508 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:32:11,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:32:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:32:11,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:11,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:32:11,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash 512088396, now seen corresponding path program 1 times [2022-01-10 18:32:11,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:11,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190951038] [2022-01-10 18:32:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:11,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:11,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:11,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190951038] [2022-01-10 18:32:11,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190951038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:11,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:11,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:32:11,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475425266] [2022-01-10 18:32:11,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:11,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:32:11,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:11,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:32:11,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:11,917 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:12,037 INFO L93 Difference]: Finished difference Result 279 states and 477 transitions. [2022-01-10 18:32:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:32:12,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 18:32:12,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:12,053 INFO L225 Difference]: With dead ends: 279 [2022-01-10 18:32:12,053 INFO L226 Difference]: Without dead ends: 197 [2022-01-10 18:32:12,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:32:12,059 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 120 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:12,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 847 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:32:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-01-10 18:32:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 127. [2022-01-10 18:32:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 126 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 193 transitions. [2022-01-10 18:32:12,101 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 193 transitions. Word has length 37 [2022-01-10 18:32:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:12,102 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 193 transitions. [2022-01-10 18:32:12,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 193 transitions. [2022-01-10 18:32:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:32:12,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:12,105 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] [2022-01-10 18:32:12,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:32:12,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1174880549, now seen corresponding path program 1 times [2022-01-10 18:32:12,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:12,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727205787] [2022-01-10 18:32:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:12,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:12,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:12,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727205787] [2022-01-10 18:32:12,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727205787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:12,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:12,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:12,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843157913] [2022-01-10 18:32:12,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:12,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:12,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:12,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:12,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:12,323 INFO L87 Difference]: Start difference. First operand 127 states and 193 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:32:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:14,582 INFO L93 Difference]: Finished difference Result 252 states and 402 transitions. [2022-01-10 18:32:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:14,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 18:32:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:14,583 INFO L225 Difference]: With dead ends: 252 [2022-01-10 18:32:14,583 INFO L226 Difference]: Without dead ends: 182 [2022-01-10 18:32:14,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:14,585 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 93 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:14,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 411 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:32:14,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-01-10 18:32:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2022-01-10 18:32:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.553072625698324) internal successors, (278), 179 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 278 transitions. [2022-01-10 18:32:14,596 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 278 transitions. Word has length 63 [2022-01-10 18:32:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:14,596 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 278 transitions. [2022-01-10 18:32:14,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 278 transitions. [2022-01-10 18:32:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:32:14,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:14,598 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] [2022-01-10 18:32:14,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:32:14,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:14,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1456450131, now seen corresponding path program 1 times [2022-01-10 18:32:14,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:14,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607820652] [2022-01-10 18:32:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:14,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:14,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:14,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607820652] [2022-01-10 18:32:14,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607820652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:14,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:14,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:14,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030673792] [2022-01-10 18:32:14,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:14,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:14,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:14,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:14,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:14,690 INFO L87 Difference]: Start difference. First operand 180 states and 278 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:14,715 INFO L93 Difference]: Finished difference Result 360 states and 576 transitions. [2022-01-10 18:32:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:14,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 18:32:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:14,717 INFO L225 Difference]: With dead ends: 360 [2022-01-10 18:32:14,717 INFO L226 Difference]: Without dead ends: 237 [2022-01-10 18:32:14,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:14,723 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 102 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:14,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-10 18:32:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2022-01-10 18:32:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.5811965811965811) internal successors, (370), 234 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 370 transitions. [2022-01-10 18:32:14,743 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 370 transitions. Word has length 65 [2022-01-10 18:32:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:14,744 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 370 transitions. [2022-01-10 18:32:14,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 370 transitions. [2022-01-10 18:32:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:32:14,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:14,745 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] [2022-01-10 18:32:14,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:32:14,745 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash -984536837, now seen corresponding path program 1 times [2022-01-10 18:32:14,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:14,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911438132] [2022-01-10 18:32:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:14,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:14,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:14,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911438132] [2022-01-10 18:32:14,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911438132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:14,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:14,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:14,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716104631] [2022-01-10 18:32:14,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:14,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:14,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:14,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:14,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:14,881 INFO L87 Difference]: Start difference. First operand 235 states and 370 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:14,944 INFO L93 Difference]: Finished difference Result 669 states and 1048 transitions. [2022-01-10 18:32:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:14,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 18:32:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:14,947 INFO L225 Difference]: With dead ends: 669 [2022-01-10 18:32:14,947 INFO L226 Difference]: Without dead ends: 459 [2022-01-10 18:32:14,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:14,954 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 395 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:14,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 463 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-01-10 18:32:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2022-01-10 18:32:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.5679824561403508) internal successors, (715), 456 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 715 transitions. [2022-01-10 18:32:14,981 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 715 transitions. Word has length 65 [2022-01-10 18:32:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:14,982 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 715 transitions. [2022-01-10 18:32:14,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 715 transitions. [2022-01-10 18:32:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:32:14,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:14,987 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] [2022-01-10 18:32:14,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:32:14,988 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1009893399, now seen corresponding path program 1 times [2022-01-10 18:32:14,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:14,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697111887] [2022-01-10 18:32:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:14,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:15,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:15,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697111887] [2022-01-10 18:32:15,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697111887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:15,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:15,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:15,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895150313] [2022-01-10 18:32:15,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:15,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:15,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:15,061 INFO L87 Difference]: Start difference. First operand 457 states and 715 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:15,105 INFO L93 Difference]: Finished difference Result 1333 states and 2081 transitions. [2022-01-10 18:32:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:15,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 18:32:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:15,110 INFO L225 Difference]: With dead ends: 1333 [2022-01-10 18:32:15,110 INFO L226 Difference]: Without dead ends: 904 [2022-01-10 18:32:15,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:15,111 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 182 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:15,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 556 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:15,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-01-10 18:32:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 459. [2022-01-10 18:32:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.5655021834061136) internal successors, (717), 458 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 717 transitions. [2022-01-10 18:32:15,129 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 717 transitions. Word has length 66 [2022-01-10 18:32:15,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:15,130 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 717 transitions. [2022-01-10 18:32:15,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 717 transitions. [2022-01-10 18:32:15,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:32:15,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:15,136 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] [2022-01-10 18:32:15,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:32:15,137 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:15,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash -287053468, now seen corresponding path program 1 times [2022-01-10 18:32:15,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:15,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236923409] [2022-01-10 18:32:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:15,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:15,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:15,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236923409] [2022-01-10 18:32:15,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236923409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:15,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:15,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:15,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775542796] [2022-01-10 18:32:15,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:15,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:15,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:15,257 INFO L87 Difference]: Start difference. First operand 459 states and 717 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:15,323 INFO L93 Difference]: Finished difference Result 1341 states and 2093 transitions. [2022-01-10 18:32:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:15,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 18:32:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:15,327 INFO L225 Difference]: With dead ends: 1341 [2022-01-10 18:32:15,327 INFO L226 Difference]: Without dead ends: 894 [2022-01-10 18:32:15,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:15,329 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 388 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:15,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 459 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:15,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-01-10 18:32:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 892. [2022-01-10 18:32:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.5510662177328844) internal successors, (1382), 891 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1382 transitions. [2022-01-10 18:32:15,366 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1382 transitions. Word has length 67 [2022-01-10 18:32:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:15,366 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1382 transitions. [2022-01-10 18:32:15,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1382 transitions. [2022-01-10 18:32:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:32:15,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:15,368 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] [2022-01-10 18:32:15,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:32:15,369 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash -341868132, now seen corresponding path program 1 times [2022-01-10 18:32:15,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:15,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055500932] [2022-01-10 18:32:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:15,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:15,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:15,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055500932] [2022-01-10 18:32:15,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055500932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:15,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:15,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:15,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096472652] [2022-01-10 18:32:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:15,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:15,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:15,440 INFO L87 Difference]: Start difference. First operand 892 states and 1382 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:15,477 INFO L93 Difference]: Finished difference Result 1551 states and 2398 transitions. [2022-01-10 18:32:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 18:32:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:15,480 INFO L225 Difference]: With dead ends: 1551 [2022-01-10 18:32:15,480 INFO L226 Difference]: Without dead ends: 675 [2022-01-10 18:32:15,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:15,482 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 69 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:15,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 614 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-01-10 18:32:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2022-01-10 18:32:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.543026706231454) internal successors, (1040), 674 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1040 transitions. [2022-01-10 18:32:15,504 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1040 transitions. Word has length 67 [2022-01-10 18:32:15,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:15,504 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 1040 transitions. [2022-01-10 18:32:15,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,504 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1040 transitions. [2022-01-10 18:32:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:32:15,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:15,505 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] [2022-01-10 18:32:15,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:32:15,505 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash -651306399, now seen corresponding path program 1 times [2022-01-10 18:32:15,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:15,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950675959] [2022-01-10 18:32:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:15,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:15,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:15,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950675959] [2022-01-10 18:32:15,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950675959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:15,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:15,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:15,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909986701] [2022-01-10 18:32:15,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:15,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:15,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:15,553 INFO L87 Difference]: Start difference. First operand 675 states and 1040 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:15,576 INFO L93 Difference]: Finished difference Result 1322 states and 2031 transitions. [2022-01-10 18:32:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 18:32:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:15,581 INFO L225 Difference]: With dead ends: 1322 [2022-01-10 18:32:15,581 INFO L226 Difference]: Without dead ends: 885 [2022-01-10 18:32:15,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:15,582 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 179 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:15,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 378 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:15,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-01-10 18:32:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 675. [2022-01-10 18:32:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.5415430267062316) internal successors, (1039), 674 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1039 transitions. [2022-01-10 18:32:15,606 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1039 transitions. Word has length 68 [2022-01-10 18:32:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:15,606 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 1039 transitions. [2022-01-10 18:32:15,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1039 transitions. [2022-01-10 18:32:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:32:15,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:15,608 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] [2022-01-10 18:32:15,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:32:15,608 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash -63284801, now seen corresponding path program 1 times [2022-01-10 18:32:15,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:15,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808860881] [2022-01-10 18:32:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:15,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:15,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:15,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808860881] [2022-01-10 18:32:15,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808860881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:15,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:15,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:15,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327623922] [2022-01-10 18:32:15,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:15,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:15,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:15,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:15,752 INFO L87 Difference]: Start difference. First operand 675 states and 1039 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:17,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:32:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:17,923 INFO L93 Difference]: Finished difference Result 1643 states and 2620 transitions. [2022-01-10 18:32:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:17,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:32:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:17,927 INFO L225 Difference]: With dead ends: 1643 [2022-01-10 18:32:17,927 INFO L226 Difference]: Without dead ends: 1129 [2022-01-10 18:32:17,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:17,929 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 91 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:17,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 356 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 18:32:17,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2022-01-10 18:32:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1127. [2022-01-10 18:32:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.5692717584369449) internal successors, (1767), 1126 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1767 transitions. [2022-01-10 18:32:17,979 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1767 transitions. Word has length 69 [2022-01-10 18:32:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:17,980 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1767 transitions. [2022-01-10 18:32:17,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1767 transitions. [2022-01-10 18:32:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:32:17,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:17,981 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] [2022-01-10 18:32:17,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:32:17,981 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:17,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:17,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1163453963, now seen corresponding path program 1 times [2022-01-10 18:32:17,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:17,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537659292] [2022-01-10 18:32:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:17,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:18,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:18,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537659292] [2022-01-10 18:32:18,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537659292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:18,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:18,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:18,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061163721] [2022-01-10 18:32:18,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:18,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:18,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:18,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:18,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:18,070 INFO L87 Difference]: Start difference. First operand 1127 states and 1767 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:18,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:18,192 INFO L93 Difference]: Finished difference Result 3266 states and 5121 transitions. [2022-01-10 18:32:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:32:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:18,199 INFO L225 Difference]: With dead ends: 3266 [2022-01-10 18:32:18,199 INFO L226 Difference]: Without dead ends: 2186 [2022-01-10 18:32:18,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:18,201 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 447 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:18,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 366 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2022-01-10 18:32:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2184. [2022-01-10 18:32:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 1.5579477782867612) internal successors, (3401), 2183 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3401 transitions. [2022-01-10 18:32:18,290 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3401 transitions. Word has length 71 [2022-01-10 18:32:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:18,290 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 3401 transitions. [2022-01-10 18:32:18,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3401 transitions. [2022-01-10 18:32:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:32:18,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:18,291 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] [2022-01-10 18:32:18,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:32:18,292 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:18,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1932547645, now seen corresponding path program 1 times [2022-01-10 18:32:18,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:18,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296253498] [2022-01-10 18:32:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:18,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:18,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:18,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296253498] [2022-01-10 18:32:18,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296253498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:18,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:18,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:18,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739303170] [2022-01-10 18:32:18,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:18,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:18,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:18,347 INFO L87 Difference]: Start difference. First operand 2184 states and 3401 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:18,480 INFO L93 Difference]: Finished difference Result 4000 states and 6343 transitions. [2022-01-10 18:32:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:18,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:32:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:18,489 INFO L225 Difference]: With dead ends: 4000 [2022-01-10 18:32:18,490 INFO L226 Difference]: Without dead ends: 2995 [2022-01-10 18:32:18,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:18,494 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 94 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:18,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 430 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2022-01-10 18:32:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2993. [2022-01-10 18:32:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2992 states have (on average 1.5635026737967914) internal successors, (4678), 2992 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 4678 transitions. [2022-01-10 18:32:18,671 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 4678 transitions. Word has length 71 [2022-01-10 18:32:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:18,671 INFO L470 AbstractCegarLoop]: Abstraction has 2993 states and 4678 transitions. [2022-01-10 18:32:18,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:18,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 4678 transitions. [2022-01-10 18:32:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:32:18,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:18,673 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] [2022-01-10 18:32:18,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:32:18,674 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1011859181, now seen corresponding path program 1 times [2022-01-10 18:32:18,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:18,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651293952] [2022-01-10 18:32:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:18,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:18,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:18,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651293952] [2022-01-10 18:32:18,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651293952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:18,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:18,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:18,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519590435] [2022-01-10 18:32:18,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:18,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:18,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:18,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:18,717 INFO L87 Difference]: Start difference. First operand 2993 states and 4678 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:18,952 INFO L93 Difference]: Finished difference Result 8885 states and 13887 transitions. [2022-01-10 18:32:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 18:32:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:18,968 INFO L225 Difference]: With dead ends: 8885 [2022-01-10 18:32:18,968 INFO L226 Difference]: Without dead ends: 5948 [2022-01-10 18:32:18,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:18,974 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 168 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:18,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 536 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5948 states. [2022-01-10 18:32:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5948 to 2999. [2022-01-10 18:32:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2998 states have (on average 1.562374916611074) internal successors, (4684), 2998 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 4684 transitions. [2022-01-10 18:32:19,127 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 4684 transitions. Word has length 72 [2022-01-10 18:32:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:19,127 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 4684 transitions. [2022-01-10 18:32:19,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 4684 transitions. [2022-01-10 18:32:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:32:19,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:19,128 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] [2022-01-10 18:32:19,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:32:19,128 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:19,129 INFO L85 PathProgramCache]: Analyzing trace with hash 948182078, now seen corresponding path program 1 times [2022-01-10 18:32:19,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:19,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023687186] [2022-01-10 18:32:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:19,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:19,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:19,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023687186] [2022-01-10 18:32:19,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023687186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:19,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:19,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:19,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463942588] [2022-01-10 18:32:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:19,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:19,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:19,202 INFO L87 Difference]: Start difference. First operand 2999 states and 4684 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:19,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:19,487 INFO L93 Difference]: Finished difference Result 8481 states and 13363 transitions. [2022-01-10 18:32:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:19,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 18:32:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:19,504 INFO L225 Difference]: With dead ends: 8481 [2022-01-10 18:32:19,504 INFO L226 Difference]: Without dead ends: 5836 [2022-01-10 18:32:19,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:19,508 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 373 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:19,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 445 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2022-01-10 18:32:19,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5834. [2022-01-10 18:32:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 5833 states have (on average 1.5443168181038915) internal successors, (9008), 5833 states have internal predecessors, (9008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 9008 transitions. [2022-01-10 18:32:19,807 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 9008 transitions. Word has length 73 [2022-01-10 18:32:19,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:19,808 INFO L470 AbstractCegarLoop]: Abstraction has 5834 states and 9008 transitions. [2022-01-10 18:32:19,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:19,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 9008 transitions. [2022-01-10 18:32:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:32:19,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:19,810 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] [2022-01-10 18:32:19,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:32:19,810 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2063683946, now seen corresponding path program 1 times [2022-01-10 18:32:19,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:19,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395359905] [2022-01-10 18:32:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:19,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:19,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:19,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395359905] [2022-01-10 18:32:19,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395359905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:19,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:19,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:19,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839785539] [2022-01-10 18:32:19,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:19,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:19,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:19,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:19,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:19,873 INFO L87 Difference]: Start difference. First operand 5834 states and 9008 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:20,068 INFO L93 Difference]: Finished difference Result 10231 states and 15767 transitions. [2022-01-10 18:32:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:20,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 18:32:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:20,081 INFO L225 Difference]: With dead ends: 10231 [2022-01-10 18:32:20,081 INFO L226 Difference]: Without dead ends: 4435 [2022-01-10 18:32:20,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:20,087 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 47 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:20,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 593 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2022-01-10 18:32:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 4434. [2022-01-10 18:32:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.536431310624859) internal successors, (6811), 4433 states have internal predecessors, (6811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6811 transitions. [2022-01-10 18:32:20,291 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6811 transitions. Word has length 73 [2022-01-10 18:32:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:20,291 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 6811 transitions. [2022-01-10 18:32:20,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6811 transitions. [2022-01-10 18:32:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:32:20,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:20,295 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] [2022-01-10 18:32:20,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:32:20,295 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1261039741, now seen corresponding path program 1 times [2022-01-10 18:32:20,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:20,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415640840] [2022-01-10 18:32:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:20,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:20,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:20,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415640840] [2022-01-10 18:32:20,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415640840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:20,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:20,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:20,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586750454] [2022-01-10 18:32:20,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:20,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:20,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:20,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:20,330 INFO L87 Difference]: Start difference. First operand 4434 states and 6811 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:20,556 INFO L93 Difference]: Finished difference Result 8754 states and 13463 transitions. [2022-01-10 18:32:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:20,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 18:32:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:20,568 INFO L225 Difference]: With dead ends: 8754 [2022-01-10 18:32:20,568 INFO L226 Difference]: Without dead ends: 5920 [2022-01-10 18:32:20,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:20,572 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 165 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:20,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 399 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:20,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5920 states. [2022-01-10 18:32:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5920 to 4434. [2022-01-10 18:32:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.5355289871418905) internal successors, (6807), 4433 states have internal predecessors, (6807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6807 transitions. [2022-01-10 18:32:20,785 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6807 transitions. Word has length 74 [2022-01-10 18:32:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:20,786 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 6807 transitions. [2022-01-10 18:32:20,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6807 transitions. [2022-01-10 18:32:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:32:20,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:20,787 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] [2022-01-10 18:32:20,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:32:20,787 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash 721076089, now seen corresponding path program 1 times [2022-01-10 18:32:20,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:20,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234879169] [2022-01-10 18:32:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:20,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:20,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:20,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234879169] [2022-01-10 18:32:20,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234879169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:20,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:20,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:20,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739101885] [2022-01-10 18:32:20,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:20,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:20,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:20,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:20,900 INFO L87 Difference]: Start difference. First operand 4434 states and 6807 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:22,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:32:25,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:32:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:25,572 INFO L93 Difference]: Finished difference Result 11773 states and 18410 transitions. [2022-01-10 18:32:25,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:25,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 18:32:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:25,586 INFO L225 Difference]: With dead ends: 11773 [2022-01-10 18:32:25,586 INFO L226 Difference]: Without dead ends: 7847 [2022-01-10 18:32:25,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:25,592 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:25,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 354 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 18:32:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7847 states. [2022-01-10 18:32:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7847 to 7845. [2022-01-10 18:32:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7845 states, 7844 states have (on average 1.5436002039775625) internal successors, (12108), 7844 states have internal predecessors, (12108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7845 states to 7845 states and 12108 transitions. [2022-01-10 18:32:26,056 INFO L78 Accepts]: Start accepts. Automaton has 7845 states and 12108 transitions. Word has length 75 [2022-01-10 18:32:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:26,057 INFO L470 AbstractCegarLoop]: Abstraction has 7845 states and 12108 transitions. [2022-01-10 18:32:26,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:26,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7845 states and 12108 transitions. [2022-01-10 18:32:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:32:26,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:26,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:32:26,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:32:26,059 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -200671217, now seen corresponding path program 1 times [2022-01-10 18:32:26,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:26,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615612210] [2022-01-10 18:32:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:26,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:26,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:26,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615612210] [2022-01-10 18:32:26,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615612210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:26,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:26,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:26,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252497703] [2022-01-10 18:32:26,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:26,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:26,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:26,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:26,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:26,166 INFO L87 Difference]: Start difference. First operand 7845 states and 12108 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:26,829 INFO L93 Difference]: Finished difference Result 20136 states and 31259 transitions. [2022-01-10 18:32:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:26,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 18:32:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:26,850 INFO L225 Difference]: With dead ends: 20136 [2022-01-10 18:32:26,850 INFO L226 Difference]: Without dead ends: 12799 [2022-01-10 18:32:26,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:26,856 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 410 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:26,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 380 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:26,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12799 states. [2022-01-10 18:32:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12799 to 12797. [2022-01-10 18:32:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12797 states, 12796 states have (on average 1.5255548608940295) internal successors, (19521), 12796 states have internal predecessors, (19521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12797 states to 12797 states and 19521 transitions. [2022-01-10 18:32:27,631 INFO L78 Accepts]: Start accepts. Automaton has 12797 states and 19521 transitions. Word has length 77 [2022-01-10 18:32:27,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:27,631 INFO L470 AbstractCegarLoop]: Abstraction has 12797 states and 19521 transitions. [2022-01-10 18:32:27,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 12797 states and 19521 transitions. [2022-01-10 18:32:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:32:27,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:27,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:32:27,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:32:27,634 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:27,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1680144567, now seen corresponding path program 1 times [2022-01-10 18:32:27,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:27,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949729520] [2022-01-10 18:32:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:27,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:27,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:27,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949729520] [2022-01-10 18:32:27,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949729520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:27,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:27,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:27,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65718721] [2022-01-10 18:32:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:27,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:27,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:27,689 INFO L87 Difference]: Start difference. First operand 12797 states and 19521 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:28,271 INFO L93 Difference]: Finished difference Result 19592 states and 29883 transitions. [2022-01-10 18:32:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:28,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 18:32:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:28,290 INFO L225 Difference]: With dead ends: 19592 [2022-01-10 18:32:28,290 INFO L226 Difference]: Without dead ends: 11148 [2022-01-10 18:32:28,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:28,300 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 51 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:28,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 591 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:28,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11148 states. [2022-01-10 18:32:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11148 to 11148. [2022-01-10 18:32:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11148 states, 11147 states have (on average 1.5229209652821387) internal successors, (16976), 11147 states have internal predecessors, (16976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11148 states to 11148 states and 16976 transitions. [2022-01-10 18:32:28,957 INFO L78 Accepts]: Start accepts. Automaton has 11148 states and 16976 transitions. Word has length 77 [2022-01-10 18:32:28,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:28,957 INFO L470 AbstractCegarLoop]: Abstraction has 11148 states and 16976 transitions. [2022-01-10 18:32:28,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:28,957 INFO L276 IsEmpty]: Start isEmpty. Operand 11148 states and 16976 transitions. [2022-01-10 18:32:28,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:32:28,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:28,959 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] [2022-01-10 18:32:28,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:32:28,959 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:28,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:28,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1473967407, now seen corresponding path program 1 times [2022-01-10 18:32:28,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:28,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39488436] [2022-01-10 18:32:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:28,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:28,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:28,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39488436] [2022-01-10 18:32:28,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39488436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:28,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:28,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:28,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858807586] [2022-01-10 18:32:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:28,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:28,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:28,991 INFO L87 Difference]: Start difference. First operand 11148 states and 16976 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:30,133 INFO L93 Difference]: Finished difference Result 33104 states and 50455 transitions. [2022-01-10 18:32:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:30,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 18:32:30,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:30,173 INFO L225 Difference]: With dead ends: 33104 [2022-01-10 18:32:30,173 INFO L226 Difference]: Without dead ends: 22180 [2022-01-10 18:32:30,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:30,181 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 154 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:30,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 516 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22180 states. [2022-01-10 18:32:30,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22180 to 11170. [2022-01-10 18:32:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11170 states, 11169 states have (on average 1.521890948160086) internal successors, (16998), 11169 states have internal predecessors, (16998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11170 states to 11170 states and 16998 transitions. [2022-01-10 18:32:30,837 INFO L78 Accepts]: Start accepts. Automaton has 11170 states and 16998 transitions. Word has length 78 [2022-01-10 18:32:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:30,838 INFO L470 AbstractCegarLoop]: Abstraction has 11170 states and 16998 transitions. [2022-01-10 18:32:30,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 11170 states and 16998 transitions. [2022-01-10 18:32:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:32:30,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:30,840 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] [2022-01-10 18:32:30,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:32:30,840 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:30,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1566282310, now seen corresponding path program 1 times [2022-01-10 18:32:30,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:30,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542054781] [2022-01-10 18:32:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:30,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:30,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:30,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542054781] [2022-01-10 18:32:30,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542054781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:30,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:30,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:30,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684497865] [2022-01-10 18:32:30,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:30,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:30,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:30,896 INFO L87 Difference]: Start difference. First operand 11170 states and 16998 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:31,634 INFO L93 Difference]: Finished difference Result 20896 states and 32143 transitions. [2022-01-10 18:32:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:31,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 18:32:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:31,657 INFO L225 Difference]: With dead ends: 20896 [2022-01-10 18:32:31,657 INFO L226 Difference]: Without dead ends: 15290 [2022-01-10 18:32:31,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:31,666 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 84 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:31,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 411 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15290 states. [2022-01-10 18:32:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15290 to 15288. [2022-01-10 18:32:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15288 states, 15287 states have (on average 1.5207692810885065) internal successors, (23248), 15287 states have internal predecessors, (23248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15288 states to 15288 states and 23248 transitions. [2022-01-10 18:32:32,636 INFO L78 Accepts]: Start accepts. Automaton has 15288 states and 23248 transitions. Word has length 78 [2022-01-10 18:32:32,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:32,636 INFO L470 AbstractCegarLoop]: Abstraction has 15288 states and 23248 transitions. [2022-01-10 18:32:32,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 15288 states and 23248 transitions. [2022-01-10 18:32:32,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:32:32,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:32,638 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] [2022-01-10 18:32:32,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:32:32,639 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:32,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:32,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1712513705, now seen corresponding path program 1 times [2022-01-10 18:32:32,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:32,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392646260] [2022-01-10 18:32:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:32,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:32,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:32,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392646260] [2022-01-10 18:32:32,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392646260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:32,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:32,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:32,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529425994] [2022-01-10 18:32:32,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:32,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:32,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:32,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:32,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:32,715 INFO L87 Difference]: Start difference. First operand 15288 states and 23248 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:34,183 INFO L93 Difference]: Finished difference Result 39460 states and 59960 transitions. [2022-01-10 18:32:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:34,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 18:32:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:34,213 INFO L225 Difference]: With dead ends: 39460 [2022-01-10 18:32:34,220 INFO L226 Difference]: Without dead ends: 24304 [2022-01-10 18:32:34,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:34,233 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 350 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:34,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 432 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24304 states. [2022-01-10 18:32:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24304 to 24302. [2022-01-10 18:32:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24302 states, 24301 states have (on average 1.5032714703098637) internal successors, (36531), 24301 states have internal predecessors, (36531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24302 states to 24302 states and 36531 transitions. [2022-01-10 18:32:35,625 INFO L78 Accepts]: Start accepts. Automaton has 24302 states and 36531 transitions. Word has length 79 [2022-01-10 18:32:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:35,625 INFO L470 AbstractCegarLoop]: Abstraction has 24302 states and 36531 transitions. [2022-01-10 18:32:35,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 24302 states and 36531 transitions. [2022-01-10 18:32:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:32:35,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:35,628 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] [2022-01-10 18:32:35,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:32:35,628 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1787649872, now seen corresponding path program 1 times [2022-01-10 18:32:35,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904435131] [2022-01-10 18:32:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:35,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:35,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:35,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904435131] [2022-01-10 18:32:35,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904435131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:35,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:35,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:35,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037459535] [2022-01-10 18:32:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:35,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:35,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:35,683 INFO L87 Difference]: Start difference. First operand 24302 states and 36531 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:36,834 INFO L93 Difference]: Finished difference Result 41392 states and 62302 transitions. [2022-01-10 18:32:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:32:36,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 18:32:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:36,861 INFO L225 Difference]: With dead ends: 41392 [2022-01-10 18:32:36,861 INFO L226 Difference]: Without dead ends: 20955 [2022-01-10 18:32:36,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:36,878 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 23 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:36,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 568 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:36,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20955 states. [2022-01-10 18:32:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20955 to 20949. [2022-01-10 18:32:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20949 states, 20948 states have (on average 1.5001432117624593) internal successors, (31425), 20948 states have internal predecessors, (31425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20949 states to 20949 states and 31425 transitions. [2022-01-10 18:32:38,321 INFO L78 Accepts]: Start accepts. Automaton has 20949 states and 31425 transitions. Word has length 79 [2022-01-10 18:32:38,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:38,322 INFO L470 AbstractCegarLoop]: Abstraction has 20949 states and 31425 transitions. [2022-01-10 18:32:38,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:38,322 INFO L276 IsEmpty]: Start isEmpty. Operand 20949 states and 31425 transitions. [2022-01-10 18:32:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:32:38,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:38,324 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] [2022-01-10 18:32:38,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:32:38,324 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:38,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -904748328, now seen corresponding path program 1 times [2022-01-10 18:32:38,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:38,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685632647] [2022-01-10 18:32:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:38,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:38,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:38,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685632647] [2022-01-10 18:32:38,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685632647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:38,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:38,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:32:38,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838121541] [2022-01-10 18:32:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:38,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:32:38,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:32:38,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:38,361 INFO L87 Difference]: Start difference. First operand 20949 states and 31425 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:39,722 INFO L93 Difference]: Finished difference Result 38149 states and 57295 transitions. [2022-01-10 18:32:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:32:39,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 18:32:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:39,759 INFO L225 Difference]: With dead ends: 38149 [2022-01-10 18:32:39,759 INFO L226 Difference]: Without dead ends: 26790 [2022-01-10 18:32:39,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:32:39,773 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 151 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:39,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 369 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:32:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26790 states. [2022-01-10 18:32:40,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26790 to 20949. [2022-01-10 18:32:41,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20949 states, 20948 states have (on average 1.4999045254916936) internal successors, (31420), 20948 states have internal predecessors, (31420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20949 states to 20949 states and 31420 transitions. [2022-01-10 18:32:41,034 INFO L78 Accepts]: Start accepts. Automaton has 20949 states and 31420 transitions. Word has length 80 [2022-01-10 18:32:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:41,035 INFO L470 AbstractCegarLoop]: Abstraction has 20949 states and 31420 transitions. [2022-01-10 18:32:41,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 20949 states and 31420 transitions. [2022-01-10 18:32:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:32:41,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:41,037 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] [2022-01-10 18:32:41,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:32:41,037 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:41,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:41,038 INFO L85 PathProgramCache]: Analyzing trace with hash 524357554, now seen corresponding path program 1 times [2022-01-10 18:32:41,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:41,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248674687] [2022-01-10 18:32:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:41,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:41,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:41,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248674687] [2022-01-10 18:32:41,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248674687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:41,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:41,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:32:41,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402011017] [2022-01-10 18:32:41,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:41,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:32:41,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:32:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:32:41,229 INFO L87 Difference]: Start difference. First operand 20949 states and 31420 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:51,289 INFO L93 Difference]: Finished difference Result 118827 states and 181078 transitions. [2022-01-10 18:32:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:32:51,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 18:32:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:51,445 INFO L225 Difference]: With dead ends: 118827 [2022-01-10 18:32:51,445 INFO L226 Difference]: Without dead ends: 98935 [2022-01-10 18:32:51,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:32:51,472 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 668 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:51,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1226 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 18:32:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98935 states. [2022-01-10 18:32:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98935 to 40191. [2022-01-10 18:32:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40191 states, 40190 states have (on average 1.4943518288131377) internal successors, (60058), 40190 states have internal predecessors, (60058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40191 states to 40191 states and 60058 transitions. [2022-01-10 18:32:56,743 INFO L78 Accepts]: Start accepts. Automaton has 40191 states and 60058 transitions. Word has length 81 [2022-01-10 18:32:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:56,743 INFO L470 AbstractCegarLoop]: Abstraction has 40191 states and 60058 transitions. [2022-01-10 18:32:56,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:32:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 40191 states and 60058 transitions. [2022-01-10 18:32:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:32:56,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:56,745 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] [2022-01-10 18:32:56,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:32:56,746 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash -954490809, now seen corresponding path program 1 times [2022-01-10 18:32:56,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125640660] [2022-01-10 18:32:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:56,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:32:56,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:56,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125640660] [2022-01-10 18:32:56,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125640660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:56,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:56,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:56,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216250192] [2022-01-10 18:32:56,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:56,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:56,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:56,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:56,913 INFO L87 Difference]: Start difference. First operand 40191 states and 60058 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:33:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:33:11,555 INFO L93 Difference]: Finished difference Result 153285 states and 230317 transitions. [2022-01-10 18:33:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:33:11,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 18:33:11,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:33:11,739 INFO L225 Difference]: With dead ends: 153285 [2022-01-10 18:33:11,739 INFO L226 Difference]: Without dead ends: 114151 [2022-01-10 18:33:11,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:33:11,782 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 326 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:33:11,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 596 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:33:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114151 states.