/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:33:49,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:33:49,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:33:49,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:33:49,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:33:49,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:33:49,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:33:49,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:33:49,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:33:49,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:33:49,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:33:49,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:33:49,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:33:49,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:33:49,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:33:49,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:33:49,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:33:49,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:33:49,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:33:49,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:33:49,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:33:49,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:33:49,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:33:49,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:33:49,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 01:33:49,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:33:49,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:33:49,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:33:49,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:33:49,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:33:49,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:33:49,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:33:49,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:33:49,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:33:49,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:33:49,437 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:33:49,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:33:49,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:33:49,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:33:49,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:33:49,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:33:49,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:33:49,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:33:49,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:33:49,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:33:49,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:33:49,441 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:33:49,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:33:49,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:33:49,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:33:49,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:33:49,443 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:33:49,443 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:33:49,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:33:49,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:33:49,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:33:49,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:33:49,671 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:33:49,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-01-11 01:33:49,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbb2ed32/7aa63b6d652245b59db8403e42e06530/FLAGb8967c077 [2022-01-11 01:33:50,296 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:33:50,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-01-11 01:33:50,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbb2ed32/7aa63b6d652245b59db8403e42e06530/FLAGb8967c077 [2022-01-11 01:33:50,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbb2ed32/7aa63b6d652245b59db8403e42e06530 [2022-01-11 01:33:50,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:33:50,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:33:50,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:33:50,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:33:50,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:33:50,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:33:50" (1/1) ... [2022-01-11 01:33:50,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0cce9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:50, skipping insertion in model container [2022-01-11 01:33:50,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:33:50" (1/1) ... [2022-01-11 01:33:50,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:33:50,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:33:50,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c[11705,11718] [2022-01-11 01:33:50,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c[19453,19466] [2022-01-11 01:33:51,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:33:51,262 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:33:51,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c[11705,11718] [2022-01-11 01:33:51,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.c[19453,19466] [2022-01-11 01:33:51,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:33:51,588 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:33:51,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51 WrapperNode [2022-01-11 01:33:51,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:33:51,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:33:51,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:33:51,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:33:51,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,754 INFO L137 Inliner]: procedures = 38, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5065 [2022-01-11 01:33:51,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:33:51,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:33:51,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:33:51,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:33:51,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:33:51,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:33:51,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:33:51,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:33:51,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (1/1) ... [2022-01-11 01:33:51,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:33:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:33:51,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 01:33:52,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 01:33:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:33:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:33:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:33:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:33:52,175 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:33:52,176 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:34:13,885 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:34:13,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:34:13,909 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 01:34:13,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:34:13 BoogieIcfgContainer [2022-01-11 01:34:13,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:34:13,912 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:34:13,912 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:34:13,913 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:34:13,916 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:34:13" (1/1) ... [2022-01-11 01:34:14,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:34:14 BasicIcfg [2022-01-11 01:34:14,979 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:34:14,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:34:14,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:34:14,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:34:14,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:33:50" (1/4) ... [2022-01-11 01:34:14,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b0668e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:34:14, skipping insertion in model container [2022-01-11 01:34:14,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:33:51" (2/4) ... [2022-01-11 01:34:14,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b0668e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:34:14, skipping insertion in model container [2022-01-11 01:34:14,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:34:13" (3/4) ... [2022-01-11 01:34:14,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b0668e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:34:14, skipping insertion in model container [2022-01-11 01:34:14,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:34:14" (4/4) ... [2022-01-11 01:34:14,988 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label09.cTransformedIcfg [2022-01-11 01:34:14,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:34:14,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:34:15,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:34:15,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 01:34:15,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:34:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-11 01:34:15,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:15,078 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] [2022-01-11 01:34:15,078 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1904121470, now seen corresponding path program 1 times [2022-01-11 01:34:15,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:15,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394828543] [2022-01-11 01:34:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:15,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:15,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:15,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394828543] [2022-01-11 01:34:15,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394828543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:15,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:15,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:34:15,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956924395] [2022-01-11 01:34:15,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:15,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 01:34:15,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 01:34:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 01:34:15,334 INFO L87 Difference]: Start difference. First operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 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 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:15,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:15,390 INFO L93 Difference]: Finished difference Result 1783 states and 3378 transitions. [2022-01-11 01:34:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 01:34:15,395 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-01-11 01:34:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:15,416 INFO L225 Difference]: With dead ends: 1783 [2022-01-11 01:34:15,416 INFO L226 Difference]: Without dead ends: 845 [2022-01-11 01:34:15,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 01:34:15,425 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:34:15,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:34:15,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-01-11 01:34:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2022-01-11 01:34:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8884934756820877) internal successors, (1592), 844 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1592 transitions. [2022-01-11 01:34:15,496 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1592 transitions. Word has length 34 [2022-01-11 01:34:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:15,496 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1592 transitions. [2022-01-11 01:34:15,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1592 transitions. [2022-01-11 01:34:15,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-11 01:34:15,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:15,502 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] [2022-01-11 01:34:15,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:34:15,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1649384925, now seen corresponding path program 1 times [2022-01-11 01:34:15,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:15,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607129193] [2022-01-11 01:34:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:15,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:15,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:15,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607129193] [2022-01-11 01:34:15,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607129193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:15,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:15,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:34:15,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335697842] [2022-01-11 01:34:15,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:15,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:34:15,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:15,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:34:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:34:15,732 INFO L87 Difference]: Start difference. First operand 845 states and 1592 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:15,842 INFO L93 Difference]: Finished difference Result 903 states and 1681 transitions. [2022-01-11 01:34:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 01:34:15,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-01-11 01:34:15,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:15,845 INFO L225 Difference]: With dead ends: 903 [2022-01-11 01:34:15,845 INFO L226 Difference]: Without dead ends: 845 [2022-01-11 01:34:15,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:34:15,848 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:34:15,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:34:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-01-11 01:34:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2022-01-11 01:34:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8517200474495847) internal successors, (1561), 844 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1561 transitions. [2022-01-11 01:34:15,861 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1561 transitions. Word has length 34 [2022-01-11 01:34:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:15,861 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1561 transitions. [2022-01-11 01:34:15,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1561 transitions. [2022-01-11 01:34:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 01:34:15,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:15,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:34:15,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:34:15,873 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:15,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1372441083, now seen corresponding path program 1 times [2022-01-11 01:34:15,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:15,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331344025] [2022-01-11 01:34:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:15,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:16,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:16,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331344025] [2022-01-11 01:34:16,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331344025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:16,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:16,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:34:16,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143824843] [2022-01-11 01:34:16,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:16,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:34:16,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:16,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:34:16,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:16,022 INFO L87 Difference]: Start difference. First operand 845 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:16,053 INFO L93 Difference]: Finished difference Result 947 states and 1721 transitions. [2022-01-11 01:34:16,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:34:16,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-11 01:34:16,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:16,136 INFO L225 Difference]: With dead ends: 947 [2022-01-11 01:34:16,136 INFO L226 Difference]: Without dead ends: 893 [2022-01-11 01:34:16,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:16,137 INFO L933 BasicCegarLoop]: 1616 mSDtfsCounter, 1510 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1703 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 [2022-01-11 01:34:16,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:34:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-01-11 01:34:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 891. [2022-01-11 01:34:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8380202474690663) internal successors, (1634), 890 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1634 transitions. [2022-01-11 01:34:16,156 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1634 transitions. Word has length 64 [2022-01-11 01:34:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:16,156 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 1634 transitions. [2022-01-11 01:34:16,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1634 transitions. [2022-01-11 01:34:16,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 01:34:16,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:16,157 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] [2022-01-11 01:34:16,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:34:16,157 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:16,158 INFO L85 PathProgramCache]: Analyzing trace with hash -78328325, now seen corresponding path program 1 times [2022-01-11 01:34:16,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:16,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007752764] [2022-01-11 01:34:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:16,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:16,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:16,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007752764] [2022-01-11 01:34:16,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007752764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:16,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:16,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:34:16,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635758813] [2022-01-11 01:34:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:16,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:34:16,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:16,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:34:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:16,295 INFO L87 Difference]: Start difference. First operand 891 states and 1634 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:16,320 INFO L93 Difference]: Finished difference Result 1079 states and 1930 transitions. [2022-01-11 01:34:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:34:16,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-11 01:34:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:16,324 INFO L225 Difference]: With dead ends: 1079 [2022-01-11 01:34:16,324 INFO L226 Difference]: Without dead ends: 979 [2022-01-11 01:34:16,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:16,333 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1702 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 [2022-01-11 01:34:16,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1506 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:34:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2022-01-11 01:34:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2022-01-11 01:34:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 975 states have (on average 1.8143589743589743) internal successors, (1769), 976 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1769 transitions. [2022-01-11 01:34:16,348 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1769 transitions. Word has length 64 [2022-01-11 01:34:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:16,348 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1769 transitions. [2022-01-11 01:34:16,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1769 transitions. [2022-01-11 01:34:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 01:34:16,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:16,349 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] [2022-01-11 01:34:16,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:34:16,349 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:16,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2022968292, now seen corresponding path program 1 times [2022-01-11 01:34:16,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:16,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297553287] [2022-01-11 01:34:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:16,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:16,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:16,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297553287] [2022-01-11 01:34:16,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297553287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:16,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:16,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:34:16,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250495036] [2022-01-11 01:34:16,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:16,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:34:16,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:34:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:16,452 INFO L87 Difference]: Start difference. First operand 977 states and 1769 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:16,476 INFO L93 Difference]: Finished difference Result 1325 states and 2315 transitions. [2022-01-11 01:34:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:34:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-11 01:34:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:16,480 INFO L225 Difference]: With dead ends: 1325 [2022-01-11 01:34:16,480 INFO L226 Difference]: Without dead ends: 1139 [2022-01-11 01:34:16,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:16,481 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 1502 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1701 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 [2022-01-11 01:34:16,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1701 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:34:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-11 01:34:16,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1137. [2022-01-11 01:34:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1135 states have (on average 1.7770925110132159) internal successors, (2017), 1136 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 2017 transitions. [2022-01-11 01:34:16,498 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 2017 transitions. Word has length 64 [2022-01-11 01:34:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:16,499 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 2017 transitions. [2022-01-11 01:34:16,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 2017 transitions. [2022-01-11 01:34:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 01:34:16,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:16,499 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] [2022-01-11 01:34:16,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:34:16,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:16,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash 310727357, now seen corresponding path program 1 times [2022-01-11 01:34:16,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:16,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4849719] [2022-01-11 01:34:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:16,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:16,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:16,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4849719] [2022-01-11 01:34:16,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4849719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:16,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:16,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:34:16,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680244587] [2022-01-11 01:34:16,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:16,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:34:16,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:16,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:34:16,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:16,593 INFO L87 Difference]: Start difference. First operand 1137 states and 2017 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:16,622 INFO L93 Difference]: Finished difference Result 1781 states and 3019 transitions. [2022-01-11 01:34:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:34:16,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-11 01:34:16,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:16,626 INFO L225 Difference]: With dead ends: 1781 [2022-01-11 01:34:16,627 INFO L226 Difference]: Without dead ends: 1435 [2022-01-11 01:34:16,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:16,628 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 1498 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1700 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 [2022-01-11 01:34:16,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1700 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:34:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2022-01-11 01:34:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1433. [2022-01-11 01:34:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1431 states have (on average 1.7253668763102725) internal successors, (2469), 1432 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2469 transitions. [2022-01-11 01:34:16,650 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2469 transitions. Word has length 64 [2022-01-11 01:34:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:16,650 INFO L470 AbstractCegarLoop]: Abstraction has 1433 states and 2469 transitions. [2022-01-11 01:34:16,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2469 transitions. [2022-01-11 01:34:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 01:34:16,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:16,651 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] [2022-01-11 01:34:16,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:34:16,651 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1133586910, now seen corresponding path program 1 times [2022-01-11 01:34:16,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:16,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896499525] [2022-01-11 01:34:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:16,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:17,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:17,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896499525] [2022-01-11 01:34:17,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896499525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:17,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:17,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 01:34:17,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948568426] [2022-01-11 01:34:17,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:17,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 01:34:17,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:17,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 01:34:17,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:34:17,157 INFO L87 Difference]: Start difference. First operand 1433 states and 2469 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:17,754 INFO L93 Difference]: Finished difference Result 2717 states and 4455 transitions. [2022-01-11 01:34:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:34:17,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-11 01:34:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:17,761 INFO L225 Difference]: With dead ends: 2717 [2022-01-11 01:34:17,761 INFO L226 Difference]: Without dead ends: 2075 [2022-01-11 01:34:17,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-11 01:34:17,762 INFO L933 BasicCegarLoop]: 1526 mSDtfsCounter, 3475 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 01:34:17,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3475 Valid, 4621 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 01:34:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-01-11 01:34:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2073. [2022-01-11 01:34:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2071 states have (on average 1.6673104780299373) internal successors, (3453), 2072 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3453 transitions. [2022-01-11 01:34:17,871 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3453 transitions. Word has length 64 [2022-01-11 01:34:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:17,872 INFO L470 AbstractCegarLoop]: Abstraction has 2073 states and 3453 transitions. [2022-01-11 01:34:17,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3453 transitions. [2022-01-11 01:34:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 01:34:17,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:17,872 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] [2022-01-11 01:34:17,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:34:17,873 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1542411135, now seen corresponding path program 1 times [2022-01-11 01:34:17,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:17,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795247748] [2022-01-11 01:34:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:17,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:18,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:18,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795247748] [2022-01-11 01:34:18,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795247748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:18,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:18,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 01:34:18,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201492556] [2022-01-11 01:34:18,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:18,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 01:34:18,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:18,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 01:34:18,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:34:18,287 INFO L87 Difference]: Start difference. First operand 2073 states and 3453 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:21,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:21,151 INFO L93 Difference]: Finished difference Result 14893 states and 23223 transitions. [2022-01-11 01:34:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 01:34:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-11 01:34:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:21,189 INFO L225 Difference]: With dead ends: 14893 [2022-01-11 01:34:21,189 INFO L226 Difference]: Without dead ends: 13611 [2022-01-11 01:34:21,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-11 01:34:21,195 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 8139 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8139 SdHoareTripleChecker+Valid, 3372 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 01:34:21,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8139 Valid, 3372 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 01:34:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2022-01-11 01:34:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 3353. [2022-01-11 01:34:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3351 states have (on average 1.601014622500746) internal successors, (5365), 3352 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5365 transitions. [2022-01-11 01:34:21,832 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5365 transitions. Word has length 64 [2022-01-11 01:34:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:21,832 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 5365 transitions. [2022-01-11 01:34:21,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5365 transitions. [2022-01-11 01:34:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:34:21,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:21,833 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] [2022-01-11 01:34:21,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:34:21,833 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:21,833 INFO L85 PathProgramCache]: Analyzing trace with hash -455475482, now seen corresponding path program 1 times [2022-01-11 01:34:21,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:21,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115762247] [2022-01-11 01:34:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:21,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:21,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:21,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115762247] [2022-01-11 01:34:21,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115762247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:21,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:21,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:34:21,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611493921] [2022-01-11 01:34:21,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:21,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:34:21,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:21,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:34:21,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:21,920 INFO L87 Difference]: Start difference. First operand 3353 states and 5365 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) [2022-01-11 01:34:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:23,047 INFO L93 Difference]: Finished difference Result 8061 states and 12407 transitions. [2022-01-11 01:34:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:34:23,047 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 [2022-01-11 01:34:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:23,059 INFO L225 Difference]: With dead ends: 8061 [2022-01-11 01:34:23,059 INFO L226 Difference]: Without dead ends: 5499 [2022-01-11 01:34:23,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:23,062 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 71 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:34:23,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 3176 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:34:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2022-01-11 01:34:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5369. [2022-01-11 01:34:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5367 states have (on average 1.5272964412148313) internal successors, (8197), 5368 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 8197 transitions. [2022-01-11 01:34:24,000 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 8197 transitions. Word has length 66 [2022-01-11 01:34:24,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:24,000 INFO L470 AbstractCegarLoop]: Abstraction has 5369 states and 8197 transitions. [2022-01-11 01:34:24,000 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) [2022-01-11 01:34:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 8197 transitions. [2022-01-11 01:34:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 01:34:24,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:24,007 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] [2022-01-11 01:34:24,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:34:24,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -424075768, now seen corresponding path program 1 times [2022-01-11 01:34:24,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:24,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39954978] [2022-01-11 01:34:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:24,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:24,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:24,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39954978] [2022-01-11 01:34:24,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39954978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:24,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:24,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 01:34:24,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133131000] [2022-01-11 01:34:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:24,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 01:34:24,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 01:34:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:34:24,354 INFO L87 Difference]: Start difference. First operand 5369 states and 8197 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2022-01-11 01:34:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:31,296 INFO L93 Difference]: Finished difference Result 28269 states and 41807 transitions. [2022-01-11 01:34:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 01:34:31,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 [2022-01-11 01:34:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:31,332 INFO L225 Difference]: With dead ends: 28269 [2022-01-11 01:34:31,333 INFO L226 Difference]: Without dead ends: 23691 [2022-01-11 01:34:31,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-11 01:34:31,340 INFO L933 BasicCegarLoop]: 1561 mSDtfsCounter, 8127 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8127 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 01:34:31,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8127 Valid, 3359 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 01:34:31,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23691 states. [2022-01-11 01:34:33,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23691 to 5369. [2022-01-11 01:34:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5367 states have (on average 1.5213340786286567) internal successors, (8165), 5368 states have internal predecessors, (8165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 8165 transitions. [2022-01-11 01:34:33,035 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 8165 transitions. Word has length 66 [2022-01-11 01:34:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:33,035 INFO L470 AbstractCegarLoop]: Abstraction has 5369 states and 8165 transitions. [2022-01-11 01:34:33,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2022-01-11 01:34:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 8165 transitions. [2022-01-11 01:34:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 01:34:33,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:33,036 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] [2022-01-11 01:34:33,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:34:33,037 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:33,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1190810241, now seen corresponding path program 1 times [2022-01-11 01:34:33,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:33,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740711521] [2022-01-11 01:34:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:33,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:33,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:33,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740711521] [2022-01-11 01:34:33,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740711521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:33,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:33,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:34:33,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142738194] [2022-01-11 01:34:33,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:33,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:34:33,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:34:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:33,132 INFO L87 Difference]: Start difference. First operand 5369 states and 8165 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-01-11 01:34:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:35,291 INFO L93 Difference]: Finished difference Result 12157 states and 18103 transitions. [2022-01-11 01:34:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:34:35,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 [2022-01-11 01:34:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:35,301 INFO L225 Difference]: With dead ends: 12157 [2022-01-11 01:34:35,301 INFO L226 Difference]: Without dead ends: 7579 [2022-01-11 01:34:35,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:35,304 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 1489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:34:35,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1638 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:34:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7579 states. [2022-01-11 01:34:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7579 to 7513. [2022-01-11 01:34:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7513 states, 7511 states have (on average 1.4896818000266276) internal successors, (11189), 7512 states have internal predecessors, (11189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7513 states to 7513 states and 11189 transitions. [2022-01-11 01:34:37,472 INFO L78 Accepts]: Start accepts. Automaton has 7513 states and 11189 transitions. Word has length 67 [2022-01-11 01:34:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:37,472 INFO L470 AbstractCegarLoop]: Abstraction has 7513 states and 11189 transitions. [2022-01-11 01:34:37,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-01-11 01:34:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7513 states and 11189 transitions. [2022-01-11 01:34:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 01:34:37,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:37,473 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] [2022-01-11 01:34:37,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:34:37,474 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:37,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash -284836140, now seen corresponding path program 1 times [2022-01-11 01:34:37,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:37,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614897336] [2022-01-11 01:34:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:37,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:37,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:37,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614897336] [2022-01-11 01:34:37,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614897336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:37,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:37,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:34:37,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770478704] [2022-01-11 01:34:37,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:37,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:34:37,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:37,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:34:37,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:34:37,565 INFO L87 Difference]: Start difference. First operand 7513 states and 11189 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2022-01-11 01:34:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:34:40,626 INFO L93 Difference]: Finished difference Result 10660 states and 15813 transitions. [2022-01-11 01:34:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 01:34:40,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 [2022-01-11 01:34:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:34:40,638 INFO L225 Difference]: With dead ends: 10660 [2022-01-11 01:34:40,639 INFO L226 Difference]: Without dead ends: 10658 [2022-01-11 01:34:40,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 01:34:40,640 INFO L933 BasicCegarLoop]: 1607 mSDtfsCounter, 293 mSDsluCounter, 4718 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 6325 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:34:40,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 6325 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:34:40,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10658 states. [2022-01-11 01:34:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10658 to 7609. [2022-01-11 01:34:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7609 states, 7607 states have (on average 1.4750887340607335) internal successors, (11221), 7608 states have internal predecessors, (11221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:34:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7609 states to 7609 states and 11221 transitions. [2022-01-11 01:34:42,912 INFO L78 Accepts]: Start accepts. Automaton has 7609 states and 11221 transitions. Word has length 67 [2022-01-11 01:34:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:34:42,913 INFO L470 AbstractCegarLoop]: Abstraction has 7609 states and 11221 transitions. [2022-01-11 01:34:42,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2022-01-11 01:34:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7609 states and 11221 transitions. [2022-01-11 01:34:42,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 01:34:42,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:34:42,916 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] [2022-01-11 01:34:42,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:34:42,917 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:34:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:34:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1241746789, now seen corresponding path program 1 times [2022-01-11 01:34:42,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:34:42,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955656340] [2022-01-11 01:34:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:34:42,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:34:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:34:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:34:43,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:34:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955656340] [2022-01-11 01:34:43,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955656340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:34:43,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:34:43,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:34:43,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174072997] [2022-01-11 01:34:43,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:34:43,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:34:43,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:34:43,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:34:43,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:34:43,020 INFO L87 Difference]: Start difference. First operand 7609 states and 11221 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 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) [2022-01-11 01:34:45,225 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 [] [2022-01-11 01:34:47,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 01:34:49,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 01:34:52,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 01:34:55,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 01:34:57,355 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 []