/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:23:17,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:23:17,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:23:17,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:23:17,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:23:17,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:23:17,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:23:17,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:23:17,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:23:17,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:23:17,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:23:17,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:23:17,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:23:17,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:23:17,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:23:17,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:23:17,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:23:17,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:23:17,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:23:17,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:23:17,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:23:17,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:23:17,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:23:17,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:23:17,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:23:17,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:23:17,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:23:17,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:23:17,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:23:17,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:23:17,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:23:17,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:23:17,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:23:17,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:23:17,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:23:17,225 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:23:17,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:23:17,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:23:17,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:23:17,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:23:17,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:23:17,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:23:17,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:23:17,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:23:17,229 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:23:17,229 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:23:17,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:23:17,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:23:17,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:23:17,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:23:17,400 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:23:17,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c [2022-01-10 19:23:17,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f8fbc46/250aeac7cd394c3f8ab10a53993caf81/FLAG52d0be4c3 [2022-01-10 19:23:18,130 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:23:18,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c [2022-01-10 19:23:18,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f8fbc46/250aeac7cd394c3f8ab10a53993caf81/FLAG52d0be4c3 [2022-01-10 19:23:18,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f8fbc46/250aeac7cd394c3f8ab10a53993caf81 [2022-01-10 19:23:18,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:23:18,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:23:18,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:23:18,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:23:18,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:23:18,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:23:18" (1/1) ... [2022-01-10 19:23:18,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429837af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:18, skipping insertion in model container [2022-01-10 19:23:18,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:23:18" (1/1) ... [2022-01-10 19:23:18,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:23:18,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:23:19,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[377069,377082] [2022-01-10 19:23:19,899 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[383339,383352] [2022-01-10 19:23:20,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:23:20,034 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:23:20,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[377069,377082] [2022-01-10 19:23:20,611 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.04.cil-1.c[383339,383352] [2022-01-10 19:23:20,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:23:20,668 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:23:20,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20 WrapperNode [2022-01-10 19:23:20,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:23:20,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:23:20,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:23:20,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:23:20,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:20,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,112 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 48, calls inlined = 87, statements flattened = 13397 [2022-01-10 19:23:21,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:23:21,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:23:21,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:23:21,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:23:21,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:23:21,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:23:21,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:23:21,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:23:21,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (1/1) ... [2022-01-10 19:23:21,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:23:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:23:21,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:23:21,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:23:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:23:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:23:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:23:21,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:23:21,727 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:23:21,728 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:23:28,340 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:23:28,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:23:28,371 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 19:23:28,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:23:28 BoogieIcfgContainer [2022-01-10 19:23:28,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:23:28,375 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:23:28,376 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:23:28,376 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:23:28,378 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:23:28" (1/1) ... [2022-01-10 19:23:29,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:23:29 BasicIcfg [2022-01-10 19:23:29,614 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:23:29,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:23:29,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:23:29,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:23:29,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:23:18" (1/4) ... [2022-01-10 19:23:29,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aefb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:23:29, skipping insertion in model container [2022-01-10 19:23:29,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:23:20" (2/4) ... [2022-01-10 19:23:29,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aefb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:23:29, skipping insertion in model container [2022-01-10 19:23:29,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:23:28" (3/4) ... [2022-01-10 19:23:29,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aefb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:23:29, skipping insertion in model container [2022-01-10 19:23:29,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:23:29" (4/4) ... [2022-01-10 19:23:29,620 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.04.cil-1.cTransformedIcfg [2022-01-10 19:23:29,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:23:29,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:23:29,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:23:29,674 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:23:29,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:23:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:29,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:29,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:29,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash -647753568, now seen corresponding path program 1 times [2022-01-10 19:23:29,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:29,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615709798] [2022-01-10 19:23:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:29,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:29,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:29,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615709798] [2022-01-10 19:23:29,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615709798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:29,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:29,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:29,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316651423] [2022-01-10 19:23:29,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:29,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:29,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,004 INFO L87 Difference]: Start difference. First operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:30,279 INFO L93 Difference]: Finished difference Result 5216 states and 9466 transitions. [2022-01-10 19:23:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:30,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:30,302 INFO L225 Difference]: With dead ends: 5216 [2022-01-10 19:23:30,303 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 19:23:30,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,314 INFO L933 BasicCegarLoop]: 4655 mSDtfsCounter, 4648 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:30,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 4655 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 19:23:30,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 19:23:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8040062843676354) internal successors, (4593), 2547 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-01-10 19:23:30,414 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 77 [2022-01-10 19:23:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:30,415 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-01-10 19:23:30,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-01-10 19:23:30,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:30,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:30,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:30,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:23:30,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:30,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 656640161, now seen corresponding path program 1 times [2022-01-10 19:23:30,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:30,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434990819] [2022-01-10 19:23:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:30,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:30,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:30,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434990819] [2022-01-10 19:23:30,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434990819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:30,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:30,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:30,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461728885] [2022-01-10 19:23:30,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:30,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:30,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,463 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:30,504 INFO L93 Difference]: Finished difference Result 2962 states and 5208 transitions. [2022-01-10 19:23:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:30,511 INFO L225 Difference]: With dead ends: 2962 [2022-01-10 19:23:30,512 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 19:23:30,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,515 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 4575 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:30,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 4583 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 19:23:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 19:23:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8020424194815396) internal successors, (4588), 2547 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4588 transitions. [2022-01-10 19:23:30,560 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4588 transitions. Word has length 77 [2022-01-10 19:23:30,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:30,561 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4588 transitions. [2022-01-10 19:23:30,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4588 transitions. [2022-01-10 19:23:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:30,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:30,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:30,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:23:30,566 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash -273275455, now seen corresponding path program 1 times [2022-01-10 19:23:30,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:30,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783836118] [2022-01-10 19:23:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:30,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:30,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:30,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783836118] [2022-01-10 19:23:30,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783836118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:30,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:30,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:30,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914562728] [2022-01-10 19:23:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:30,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:30,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,609 INFO L87 Difference]: Start difference. First operand 2548 states and 4588 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:30,652 INFO L93 Difference]: Finished difference Result 2961 states and 5197 transitions. [2022-01-10 19:23:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:30,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:30,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:30,660 INFO L225 Difference]: With dead ends: 2961 [2022-01-10 19:23:30,660 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 19:23:30,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,666 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 4569 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:30,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 4578 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 19:23:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 19:23:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8000785545954439) internal successors, (4583), 2547 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4583 transitions. [2022-01-10 19:23:30,705 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4583 transitions. Word has length 77 [2022-01-10 19:23:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:30,707 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4583 transitions. [2022-01-10 19:23:30,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4583 transitions. [2022-01-10 19:23:30,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:30,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:30,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:30,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:23:30,709 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:30,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:30,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1774937249, now seen corresponding path program 1 times [2022-01-10 19:23:30,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:30,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687311459] [2022-01-10 19:23:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:30,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:30,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:30,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687311459] [2022-01-10 19:23:30,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687311459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:30,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:30,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:30,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597908838] [2022-01-10 19:23:30,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:30,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:30,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:30,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,779 INFO L87 Difference]: Start difference. First operand 2548 states and 4583 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:30,813 INFO L93 Difference]: Finished difference Result 2960 states and 5186 transitions. [2022-01-10 19:23:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:30,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:30,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:30,820 INFO L225 Difference]: With dead ends: 2960 [2022-01-10 19:23:30,820 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 19:23:30,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,828 INFO L933 BasicCegarLoop]: 4573 mSDtfsCounter, 4563 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:30,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4563 Valid, 4573 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 19:23:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 19:23:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.798114689709348) internal successors, (4578), 2547 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4578 transitions. [2022-01-10 19:23:30,865 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4578 transitions. Word has length 77 [2022-01-10 19:23:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:30,865 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4578 transitions. [2022-01-10 19:23:30,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4578 transitions. [2022-01-10 19:23:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:30,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:30,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:30,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:23:30,866 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:30,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:30,867 INFO L85 PathProgramCache]: Analyzing trace with hash 178440641, now seen corresponding path program 1 times [2022-01-10 19:23:30,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:30,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471733831] [2022-01-10 19:23:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:30,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:30,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:30,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471733831] [2022-01-10 19:23:30,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471733831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:30,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:30,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:30,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248981448] [2022-01-10 19:23:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:30,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:30,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,917 INFO L87 Difference]: Start difference. First operand 2548 states and 4578 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:30,976 INFO L93 Difference]: Finished difference Result 2959 states and 5175 transitions. [2022-01-10 19:23:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:30,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:30,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:30,984 INFO L225 Difference]: With dead ends: 2959 [2022-01-10 19:23:30,984 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 19:23:30,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:30,985 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 4498 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:30,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 4602 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:30,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 19:23:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 19:23:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.793401413982718) internal successors, (4566), 2547 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4566 transitions. [2022-01-10 19:23:31,027 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4566 transitions. Word has length 77 [2022-01-10 19:23:31,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:31,027 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4566 transitions. [2022-01-10 19:23:31,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4566 transitions. [2022-01-10 19:23:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:31,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:31,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:31,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:23:31,028 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:31,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 581156033, now seen corresponding path program 1 times [2022-01-10 19:23:31,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:31,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621723414] [2022-01-10 19:23:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:31,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:31,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:31,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621723414] [2022-01-10 19:23:31,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621723414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:31,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:31,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:31,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334687719] [2022-01-10 19:23:31,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:31,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:31,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:31,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:31,081 INFO L87 Difference]: Start difference. First operand 2548 states and 4566 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:31,142 INFO L93 Difference]: Finished difference Result 2958 states and 5150 transitions. [2022-01-10 19:23:31,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:31,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:31,150 INFO L225 Difference]: With dead ends: 2958 [2022-01-10 19:23:31,150 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 19:23:31,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:31,153 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4486 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:31,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4486 Valid, 4589 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 19:23:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 19:23:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.788688138256088) internal successors, (4554), 2547 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4554 transitions. [2022-01-10 19:23:31,197 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4554 transitions. Word has length 77 [2022-01-10 19:23:31,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:31,198 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4554 transitions. [2022-01-10 19:23:31,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4554 transitions. [2022-01-10 19:23:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:31,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:31,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:31,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:23:31,199 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:31,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1768998816, now seen corresponding path program 1 times [2022-01-10 19:23:31,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:31,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042134778] [2022-01-10 19:23:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:31,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:31,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042134778] [2022-01-10 19:23:31,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042134778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:31,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:31,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:31,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554136169] [2022-01-10 19:23:31,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:31,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:31,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:31,412 INFO L87 Difference]: Start difference. First operand 2548 states and 4554 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:31,498 INFO L93 Difference]: Finished difference Result 2956 states and 5123 transitions. [2022-01-10 19:23:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:31,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:31,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:31,511 INFO L225 Difference]: With dead ends: 2956 [2022-01-10 19:23:31,511 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 19:23:31,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:31,528 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 4473 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:31,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 4576 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 19:23:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 19:23:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.783974862529458) internal successors, (4542), 2547 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4542 transitions. [2022-01-10 19:23:31,631 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4542 transitions. Word has length 77 [2022-01-10 19:23:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:31,632 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4542 transitions. [2022-01-10 19:23:31,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4542 transitions. [2022-01-10 19:23:31,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:31,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:31,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:31,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:23:31,634 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:31,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1127088383, now seen corresponding path program 1 times [2022-01-10 19:23:31,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:31,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749644116] [2022-01-10 19:23:31,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:31,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:31,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:31,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749644116] [2022-01-10 19:23:31,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749644116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:31,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:31,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:31,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767955552] [2022-01-10 19:23:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:31,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:31,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:31,698 INFO L87 Difference]: Start difference. First operand 2548 states and 4542 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:31,760 INFO L93 Difference]: Finished difference Result 2955 states and 5098 transitions. [2022-01-10 19:23:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:31,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:31,769 INFO L225 Difference]: With dead ends: 2955 [2022-01-10 19:23:31,769 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 19:23:31,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:31,771 INFO L933 BasicCegarLoop]: 4518 mSDtfsCounter, 4461 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:31,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 4563 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 19:23:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 19:23:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.7792615868028279) internal successors, (4530), 2547 states have internal predecessors, (4530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4530 transitions. [2022-01-10 19:23:31,824 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4530 transitions. Word has length 77 [2022-01-10 19:23:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:31,824 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4530 transitions. [2022-01-10 19:23:31,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4530 transitions. [2022-01-10 19:23:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:31,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:31,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:31,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:23:31,826 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2130979199, now seen corresponding path program 1 times [2022-01-10 19:23:31,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:31,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690232218] [2022-01-10 19:23:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:31,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:31,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:31,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690232218] [2022-01-10 19:23:31,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690232218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:31,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:31,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:23:31,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024709933] [2022-01-10 19:23:31,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:31,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:23:31,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:23:31,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:23:31,885 INFO L87 Difference]: Start difference. First operand 2548 states and 4530 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:32,026 INFO L93 Difference]: Finished difference Result 3162 states and 5362 transitions. [2022-01-10 19:23:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:23:32,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:32,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:32,045 INFO L225 Difference]: With dead ends: 3162 [2022-01-10 19:23:32,045 INFO L226 Difference]: Without dead ends: 2769 [2022-01-10 19:23:32,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:23:32,049 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 1458 mSDsluCounter, 12849 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 17413 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:32,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 17413 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-10 19:23:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2551. [2022-01-10 19:23:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2551 states, 2549 states have (on average 1.7755982738328757) internal successors, (4526), 2550 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 4526 transitions. [2022-01-10 19:23:32,105 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 4526 transitions. Word has length 77 [2022-01-10 19:23:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:32,105 INFO L470 AbstractCegarLoop]: Abstraction has 2551 states and 4526 transitions. [2022-01-10 19:23:32,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 4526 transitions. [2022-01-10 19:23:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:32,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:32,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:32,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:23:32,109 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:32,109 INFO L85 PathProgramCache]: Analyzing trace with hash 430238720, now seen corresponding path program 1 times [2022-01-10 19:23:32,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:32,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645190132] [2022-01-10 19:23:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:32,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:32,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645190132] [2022-01-10 19:23:32,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645190132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:32,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:32,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:32,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604884717] [2022-01-10 19:23:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:32,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:32,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:32,148 INFO L87 Difference]: Start difference. First operand 2551 states and 4526 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:32,227 INFO L93 Difference]: Finished difference Result 3262 states and 5464 transitions. [2022-01-10 19:23:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:32,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:32,232 INFO L225 Difference]: With dead ends: 3262 [2022-01-10 19:23:32,232 INFO L226 Difference]: Without dead ends: 2868 [2022-01-10 19:23:32,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:32,233 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 4415 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4972 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:32,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4972 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-10 19:23:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2864. [2022-01-10 19:23:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2862 states have (on average 1.7232704402515724) internal successors, (4932), 2863 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4932 transitions. [2022-01-10 19:23:32,297 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4932 transitions. Word has length 77 [2022-01-10 19:23:32,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:32,297 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 4932 transitions. [2022-01-10 19:23:32,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4932 transitions. [2022-01-10 19:23:32,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:32,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:32,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:32,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:23:32,299 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:32,299 INFO L85 PathProgramCache]: Analyzing trace with hash 229688575, now seen corresponding path program 1 times [2022-01-10 19:23:32,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:32,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460769644] [2022-01-10 19:23:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:32,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:32,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:32,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460769644] [2022-01-10 19:23:32,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460769644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:32,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:32,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:32,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271318868] [2022-01-10 19:23:32,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:32,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:32,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:32,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:32,338 INFO L87 Difference]: Start difference. First operand 2864 states and 4932 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:32,519 INFO L93 Difference]: Finished difference Result 4200 states and 6687 transitions. [2022-01-10 19:23:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:32,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:32,527 INFO L225 Difference]: With dead ends: 4200 [2022-01-10 19:23:32,528 INFO L226 Difference]: Without dead ends: 3468 [2022-01-10 19:23:32,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:32,532 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 4415 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4986 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:32,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4986 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2022-01-10 19:23:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3466. [2022-01-10 19:23:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6521362586605082) internal successors, (5723), 3465 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5723 transitions. [2022-01-10 19:23:32,623 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5723 transitions. Word has length 77 [2022-01-10 19:23:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:32,623 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5723 transitions. [2022-01-10 19:23:32,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5723 transitions. [2022-01-10 19:23:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:32,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:32,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:32,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:23:32,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1847520768, now seen corresponding path program 1 times [2022-01-10 19:23:32,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:32,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217016013] [2022-01-10 19:23:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:32,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:32,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:32,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217016013] [2022-01-10 19:23:32,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217016013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:32,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:32,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:32,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877932724] [2022-01-10 19:23:32,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:32,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:32,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:32,673 INFO L87 Difference]: Start difference. First operand 3466 states and 5723 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:32,770 INFO L93 Difference]: Finished difference Result 4793 states and 7464 transitions. [2022-01-10 19:23:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:32,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:32,776 INFO L225 Difference]: With dead ends: 4793 [2022-01-10 19:23:32,776 INFO L226 Difference]: Without dead ends: 3466 [2022-01-10 19:23:32,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:32,779 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4401 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:32,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4401 Valid, 4539 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2022-01-10 19:23:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3466. [2022-01-10 19:23:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6449191685912241) internal successors, (5698), 3465 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5698 transitions. [2022-01-10 19:23:32,873 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5698 transitions. Word has length 77 [2022-01-10 19:23:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:32,873 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5698 transitions. [2022-01-10 19:23:32,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5698 transitions. [2022-01-10 19:23:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:23:32,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:32,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:32,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:23:32,875 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:32,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:32,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1450374175, now seen corresponding path program 1 times [2022-01-10 19:23:32,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:32,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804058423] [2022-01-10 19:23:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:32,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:32,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:32,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804058423] [2022-01-10 19:23:32,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804058423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:32,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:32,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:23:32,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675189464] [2022-01-10 19:23:32,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:32,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:32,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:32,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:32,915 INFO L87 Difference]: Start difference. First operand 3466 states and 5698 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:33,061 INFO L93 Difference]: Finished difference Result 6029 states and 9021 transitions. [2022-01-10 19:23:33,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:33,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:23:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:33,069 INFO L225 Difference]: With dead ends: 6029 [2022-01-10 19:23:33,069 INFO L226 Difference]: Without dead ends: 4706 [2022-01-10 19:23:33,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:33,073 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4409 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 4947 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:33,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 4947 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2022-01-10 19:23:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4560. [2022-01-10 19:23:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4558 states have (on average 1.556823168056165) internal successors, (7096), 4559 states have internal predecessors, (7096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7096 transitions. [2022-01-10 19:23:33,220 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7096 transitions. Word has length 77 [2022-01-10 19:23:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:33,220 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7096 transitions. [2022-01-10 19:23:33,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7096 transitions. [2022-01-10 19:23:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:23:33,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:33,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:33,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:23:33,222 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1630624386, now seen corresponding path program 1 times [2022-01-10 19:23:33,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:33,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779986699] [2022-01-10 19:23:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:33,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:33,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:33,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779986699] [2022-01-10 19:23:33,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779986699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:33,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:33,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:33,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054556669] [2022-01-10 19:23:33,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:33,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:33,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:33,264 INFO L87 Difference]: Start difference. First operand 4560 states and 7096 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:33,569 INFO L93 Difference]: Finished difference Result 9212 states and 13099 transitions. [2022-01-10 19:23:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:33,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:23:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:33,581 INFO L225 Difference]: With dead ends: 9212 [2022-01-10 19:23:33,581 INFO L226 Difference]: Without dead ends: 6801 [2022-01-10 19:23:33,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:33,585 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 4418 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:33,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2022-01-10 19:23:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6571. [2022-01-10 19:23:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6569 states have (on average 1.472674684122393) internal successors, (9674), 6570 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 9674 transitions. [2022-01-10 19:23:33,851 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 9674 transitions. Word has length 124 [2022-01-10 19:23:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:33,851 INFO L470 AbstractCegarLoop]: Abstraction has 6571 states and 9674 transitions. [2022-01-10 19:23:33,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 9674 transitions. [2022-01-10 19:23:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:23:33,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:33,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:33,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:23:33,855 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:33,855 INFO L85 PathProgramCache]: Analyzing trace with hash 549899582, now seen corresponding path program 1 times [2022-01-10 19:23:33,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:33,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819865675] [2022-01-10 19:23:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:33,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:33,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:33,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819865675] [2022-01-10 19:23:33,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819865675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:33,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:33,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:23:33,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597427882] [2022-01-10 19:23:33,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:33,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:23:33,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:23:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:23:33,908 INFO L87 Difference]: Start difference. First operand 6571 states and 9674 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:34,410 INFO L93 Difference]: Finished difference Result 14833 states and 20425 transitions. [2022-01-10 19:23:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:23:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:23:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:34,429 INFO L225 Difference]: With dead ends: 14833 [2022-01-10 19:23:34,430 INFO L226 Difference]: Without dead ends: 10435 [2022-01-10 19:23:34,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:23:34,440 INFO L933 BasicCegarLoop]: 4479 mSDtfsCounter, 1136 mSDsluCounter, 13259 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 17738 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:34,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 17738 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:23:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-01-10 19:23:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 6619. [2022-01-10 19:23:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6619 states, 6617 states have (on average 1.4594226991083572) internal successors, (9657), 6618 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 9657 transitions. [2022-01-10 19:23:34,856 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 9657 transitions. Word has length 124 [2022-01-10 19:23:34,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:34,857 INFO L470 AbstractCegarLoop]: Abstraction has 6619 states and 9657 transitions. [2022-01-10 19:23:34,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:34,857 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 9657 transitions. [2022-01-10 19:23:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:23:34,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:34,860 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:34,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:23:34,860 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:34,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:34,860 INFO L85 PathProgramCache]: Analyzing trace with hash 584686780, now seen corresponding path program 1 times [2022-01-10 19:23:34,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:34,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586257690] [2022-01-10 19:23:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:34,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:34,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:34,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586257690] [2022-01-10 19:23:34,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586257690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:34,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:34,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:34,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735650914] [2022-01-10 19:23:34,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:34,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:34,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:34,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:34,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:34,916 INFO L87 Difference]: Start difference. First operand 6619 states and 9657 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:35,290 INFO L93 Difference]: Finished difference Result 15041 states and 20225 transitions. [2022-01-10 19:23:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:35,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:23:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:35,309 INFO L225 Difference]: With dead ends: 15041 [2022-01-10 19:23:35,309 INFO L226 Difference]: Without dead ends: 10607 [2022-01-10 19:23:35,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:35,319 INFO L933 BasicCegarLoop]: 4690 mSDtfsCounter, 4315 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:35,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4315 Valid, 5208 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2022-01-10 19:23:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 10605. [2022-01-10 19:23:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10605 states, 10603 states have (on average 1.3708384419503914) internal successors, (14535), 10604 states have internal predecessors, (14535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10605 states to 10605 states and 14535 transitions. [2022-01-10 19:23:35,821 INFO L78 Accepts]: Start accepts. Automaton has 10605 states and 14535 transitions. Word has length 124 [2022-01-10 19:23:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:35,822 INFO L470 AbstractCegarLoop]: Abstraction has 10605 states and 14535 transitions. [2022-01-10 19:23:35,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 10605 states and 14535 transitions. [2022-01-10 19:23:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:23:35,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:35,827 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:35,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:23:35,827 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:35,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1810932571, now seen corresponding path program 1 times [2022-01-10 19:23:35,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:35,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091102080] [2022-01-10 19:23:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:35,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:23:35,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:35,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091102080] [2022-01-10 19:23:35,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091102080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:35,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:35,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:35,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064273885] [2022-01-10 19:23:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:35,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:35,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:35,853 INFO L87 Difference]: Start difference. First operand 10605 states and 14535 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:36,367 INFO L93 Difference]: Finished difference Result 18967 states and 24972 transitions. [2022-01-10 19:23:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:36,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:23:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:36,383 INFO L225 Difference]: With dead ends: 18967 [2022-01-10 19:23:36,383 INFO L226 Difference]: Without dead ends: 10547 [2022-01-10 19:23:36,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:36,391 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 532 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 8452 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:36,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 8452 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10547 states. [2022-01-10 19:23:36,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 10547. [2022-01-10 19:23:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10547 states, 10545 states have (on average 1.3720246562351825) internal successors, (14468), 10546 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10547 states to 10547 states and 14468 transitions. [2022-01-10 19:23:36,776 INFO L78 Accepts]: Start accepts. Automaton has 10547 states and 14468 transitions. Word has length 124 [2022-01-10 19:23:36,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:36,776 INFO L470 AbstractCegarLoop]: Abstraction has 10547 states and 14468 transitions. [2022-01-10 19:23:36,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 10547 states and 14468 transitions. [2022-01-10 19:23:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 19:23:36,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:36,780 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:36,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:23:36,780 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash -858880914, now seen corresponding path program 1 times [2022-01-10 19:23:36,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:36,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397669584] [2022-01-10 19:23:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:36,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:36,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:36,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397669584] [2022-01-10 19:23:36,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397669584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:36,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:36,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:36,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886977188] [2022-01-10 19:23:36,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:36,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:36,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:36,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:36,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:36,821 INFO L87 Difference]: Start difference. First operand 10547 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:37,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:37,477 INFO L93 Difference]: Finished difference Result 26816 states and 34670 transitions. [2022-01-10 19:23:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:37,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 19:23:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:37,512 INFO L225 Difference]: With dead ends: 26816 [2022-01-10 19:23:37,512 INFO L226 Difference]: Without dead ends: 18454 [2022-01-10 19:23:37,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:37,528 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 4418 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:37,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5128 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2022-01-10 19:23:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18164. [2022-01-10 19:23:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18164 states, 18162 states have (on average 1.3104283669199428) internal successors, (23800), 18163 states have internal predecessors, (23800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18164 states to 18164 states and 23800 transitions. [2022-01-10 19:23:38,302 INFO L78 Accepts]: Start accepts. Automaton has 18164 states and 23800 transitions. Word has length 125 [2022-01-10 19:23:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:38,302 INFO L470 AbstractCegarLoop]: Abstraction has 18164 states and 23800 transitions. [2022-01-10 19:23:38,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 18164 states and 23800 transitions. [2022-01-10 19:23:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 19:23:38,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:38,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:38,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:23:38,309 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash 38033487, now seen corresponding path program 1 times [2022-01-10 19:23:38,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:38,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120606340] [2022-01-10 19:23:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:38,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:23:38,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:38,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120606340] [2022-01-10 19:23:38,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120606340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:38,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:38,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:38,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775651114] [2022-01-10 19:23:38,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:38,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:38,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:38,332 INFO L87 Difference]: Start difference. First operand 18164 states and 23800 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:38,849 INFO L93 Difference]: Finished difference Result 30318 states and 38834 transitions. [2022-01-10 19:23:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:38,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 19:23:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:38,876 INFO L225 Difference]: With dead ends: 30318 [2022-01-10 19:23:38,876 INFO L226 Difference]: Without dead ends: 14313 [2022-01-10 19:23:38,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:38,893 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 530 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 8451 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:38,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 8451 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14313 states. [2022-01-10 19:23:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14313 to 14313. [2022-01-10 19:23:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14313 states, 14311 states have (on average 1.3300957305569143) internal successors, (19035), 14312 states have internal predecessors, (19035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 19035 transitions. [2022-01-10 19:23:39,614 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 19035 transitions. Word has length 125 [2022-01-10 19:23:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:39,614 INFO L470 AbstractCegarLoop]: Abstraction has 14313 states and 19035 transitions. [2022-01-10 19:23:39,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 19035 transitions. [2022-01-10 19:23:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 19:23:39,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:39,619 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:39,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:23:39,619 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 601273385, now seen corresponding path program 1 times [2022-01-10 19:23:39,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921663598] [2022-01-10 19:23:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:39,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:39,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:39,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921663598] [2022-01-10 19:23:39,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921663598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:39,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:39,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:39,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834776223] [2022-01-10 19:23:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:39,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:39,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:39,649 INFO L87 Difference]: Start difference. First operand 14313 states and 19035 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:40,635 INFO L93 Difference]: Finished difference Result 37129 states and 47171 transitions. [2022-01-10 19:23:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:40,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 19:23:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:40,723 INFO L225 Difference]: With dead ends: 37129 [2022-01-10 19:23:40,723 INFO L226 Difference]: Without dead ends: 25001 [2022-01-10 19:23:40,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:40,755 INFO L933 BasicCegarLoop]: 4641 mSDtfsCounter, 4418 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:40,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:40,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25001 states. [2022-01-10 19:23:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25001 to 24327. [2022-01-10 19:23:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24327 states, 24325 states have (on average 1.2857965056526208) internal successors, (31277), 24326 states have internal predecessors, (31277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24327 states to 24327 states and 31277 transitions. [2022-01-10 19:23:41,865 INFO L78 Accepts]: Start accepts. Automaton has 24327 states and 31277 transitions. Word has length 126 [2022-01-10 19:23:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:41,865 INFO L470 AbstractCegarLoop]: Abstraction has 24327 states and 31277 transitions. [2022-01-10 19:23:41,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 24327 states and 31277 transitions. [2022-01-10 19:23:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 19:23:41,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:41,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:41,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:23:41,873 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:41,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1938805690, now seen corresponding path program 1 times [2022-01-10 19:23:41,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:41,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029674648] [2022-01-10 19:23:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:41,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:23:41,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:41,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029674648] [2022-01-10 19:23:41,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029674648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:41,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:41,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:41,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632882172] [2022-01-10 19:23:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:41,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:41,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:41,894 INFO L87 Difference]: Start difference. First operand 24327 states and 31277 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:42,884 INFO L93 Difference]: Finished difference Result 46432 states and 58482 transitions. [2022-01-10 19:23:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 19:23:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:42,919 INFO L225 Difference]: With dead ends: 46432 [2022-01-10 19:23:42,919 INFO L226 Difference]: Without dead ends: 24271 [2022-01-10 19:23:42,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:42,940 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 528 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 8450 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:42,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 8450 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24271 states. [2022-01-10 19:23:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24271 to 24271. [2022-01-10 19:23:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24271 states, 24269 states have (on average 1.2861675388355516) internal successors, (31214), 24270 states have internal predecessors, (31214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24271 states to 24271 states and 31214 transitions. [2022-01-10 19:23:44,090 INFO L78 Accepts]: Start accepts. Automaton has 24271 states and 31214 transitions. Word has length 126 [2022-01-10 19:23:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:44,091 INFO L470 AbstractCegarLoop]: Abstraction has 24271 states and 31214 transitions. [2022-01-10 19:23:44,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24271 states and 31214 transitions. [2022-01-10 19:23:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:23:44,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:44,099 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:44,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:23:44,099 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:44,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:44,100 INFO L85 PathProgramCache]: Analyzing trace with hash -386128003, now seen corresponding path program 1 times [2022-01-10 19:23:44,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:44,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126897800] [2022-01-10 19:23:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:44,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:44,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:44,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126897800] [2022-01-10 19:23:44,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126897800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:44,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:44,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:44,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588987429] [2022-01-10 19:23:44,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:44,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:44,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:44,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:44,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:44,137 INFO L87 Difference]: Start difference. First operand 24271 states and 31214 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:45,998 INFO L93 Difference]: Finished difference Result 64498 states and 80668 transitions. [2022-01-10 19:23:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:45,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:23:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:46,057 INFO L225 Difference]: With dead ends: 64498 [2022-01-10 19:23:46,058 INFO L226 Difference]: Without dead ends: 42412 [2022-01-10 19:23:46,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:46,087 INFO L933 BasicCegarLoop]: 4632 mSDtfsCounter, 4324 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:46,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 5144 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42412 states. [2022-01-10 19:23:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42412 to 42410. [2022-01-10 19:23:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42410 states, 42408 states have (on average 1.2583003206942087) internal successors, (53362), 42409 states have internal predecessors, (53362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:48,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42410 states to 42410 states and 53362 transitions. [2022-01-10 19:23:48,289 INFO L78 Accepts]: Start accepts. Automaton has 42410 states and 53362 transitions. Word has length 127 [2022-01-10 19:23:48,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:48,290 INFO L470 AbstractCegarLoop]: Abstraction has 42410 states and 53362 transitions. [2022-01-10 19:23:48,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 42410 states and 53362 transitions. [2022-01-10 19:23:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:23:48,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:48,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:48,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:23:48,307 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash 840117788, now seen corresponding path program 1 times [2022-01-10 19:23:48,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:48,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510902449] [2022-01-10 19:23:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:48,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:23:48,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:48,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510902449] [2022-01-10 19:23:48,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510902449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:48,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:48,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:48,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675708695] [2022-01-10 19:23:48,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:48,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:48,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:48,329 INFO L87 Difference]: Start difference. First operand 42410 states and 53362 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:50,492 INFO L93 Difference]: Finished difference Result 82580 states and 102635 transitions. [2022-01-10 19:23:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:50,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:23:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:50,553 INFO L225 Difference]: With dead ends: 82580 [2022-01-10 19:23:50,553 INFO L226 Difference]: Without dead ends: 42355 [2022-01-10 19:23:50,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:50,599 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 526 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:50,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 8449 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42355 states. [2022-01-10 19:23:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42355 to 42355. [2022-01-10 19:23:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42355 states, 42353 states have (on average 1.2584940854248814) internal successors, (53301), 42354 states have internal predecessors, (53301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42355 states to 42355 states and 53301 transitions. [2022-01-10 19:23:52,947 INFO L78 Accepts]: Start accepts. Automaton has 42355 states and 53301 transitions. Word has length 127 [2022-01-10 19:23:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:23:52,947 INFO L470 AbstractCegarLoop]: Abstraction has 42355 states and 53301 transitions. [2022-01-10 19:23:52,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 42355 states and 53301 transitions. [2022-01-10 19:23:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 19:23:52,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:23:52,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:23:52,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:23:52,958 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:23:52,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:23:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1501899619, now seen corresponding path program 1 times [2022-01-10 19:23:52,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:23:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367205261] [2022-01-10 19:23:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:23:52,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:23:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:23:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:23:53,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:23:53,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367205261] [2022-01-10 19:23:53,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367205261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:23:53,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:23:53,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:23:53,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89503800] [2022-01-10 19:23:53,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:23:53,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:23:53,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:23:53,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:23:53,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:23:53,073 INFO L87 Difference]: Start difference. First operand 42355 states and 53301 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:23:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:23:56,958 INFO L93 Difference]: Finished difference Result 118080 states and 145974 transitions. [2022-01-10 19:23:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:23:56,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-10 19:23:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:23:57,075 INFO L225 Difference]: With dead ends: 118080 [2022-01-10 19:23:57,076 INFO L226 Difference]: Without dead ends: 77910 [2022-01-10 19:23:57,112 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 [2022-01-10 19:23:57,112 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 449 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 9413 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:23:57,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 9413 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:23:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77910 states. [2022-01-10 19:24:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77910 to 77910. [2022-01-10 19:24:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 77908 states have (on average 1.2313626328490015) internal successors, (95933), 77909 states have internal predecessors, (95933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 95933 transitions. [2022-01-10 19:24:01,221 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 95933 transitions. Word has length 128 [2022-01-10 19:24:01,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:01,221 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 95933 transitions. [2022-01-10 19:24:01,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 95933 transitions. [2022-01-10 19:24:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 19:24:01,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:01,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:01,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:24:01,265 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1562361697, now seen corresponding path program 1 times [2022-01-10 19:24:01,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:01,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782990501] [2022-01-10 19:24:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:01,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:01,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:01,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782990501] [2022-01-10 19:24:01,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782990501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:01,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:01,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:01,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167233348] [2022-01-10 19:24:01,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:01,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:01,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:01,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:01,334 INFO L87 Difference]: Start difference. First operand 77910 states and 95933 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:24:06,772 INFO L93 Difference]: Finished difference Result 187344 states and 228665 transitions. [2022-01-10 19:24:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:24:06,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-10 19:24:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:24:06,973 INFO L225 Difference]: With dead ends: 187344 [2022-01-10 19:24:06,973 INFO L226 Difference]: Without dead ends: 111630 [2022-01-10 19:24:07,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:07,048 INFO L933 BasicCegarLoop]: 4482 mSDtfsCounter, 4301 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 4927 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:24:07,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 4927 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:24:07,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111630 states. [2022-01-10 19:24:13,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111630 to 111244. [2022-01-10 19:24:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111244 states, 111242 states have (on average 1.2194045414501717) internal successors, (135649), 111243 states have internal predecessors, (135649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111244 states to 111244 states and 135649 transitions. [2022-01-10 19:24:13,589 INFO L78 Accepts]: Start accepts. Automaton has 111244 states and 135649 transitions. Word has length 165 [2022-01-10 19:24:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:24:13,589 INFO L470 AbstractCegarLoop]: Abstraction has 111244 states and 135649 transitions. [2022-01-10 19:24:13,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:24:13,590 INFO L276 IsEmpty]: Start isEmpty. Operand 111244 states and 135649 transitions. [2022-01-10 19:24:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 19:24:13,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:24:13,633 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:24:13,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 19:24:13,633 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:24:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:24:13,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1763675689, now seen corresponding path program 1 times [2022-01-10 19:24:13,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:24:13,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242530531] [2022-01-10 19:24:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:24:13,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:24:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:24:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:24:13,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:24:13,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242530531] [2022-01-10 19:24:13,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242530531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:24:13,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:24:13,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:24:13,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620145885] [2022-01-10 19:24:13,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:24:13,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:24:13,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:24:13,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:24:13,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:24:13,684 INFO L87 Difference]: Start difference. First operand 111244 states and 135649 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)